Acrobase  

Καλώς ήρθατε στην AcroBase.
Δείτε εδώ τα πιο πρόσφατα μηνύματα από όλες τις περιοχές συζητήσεων, καθώς και όλες τις υπηρεσίες της AcroBase.
H εγγραφή σας είναι γρήγορη και εύκολη.

Επιστροφή   Acrobase > Ελεύθερος Χρόνος και Ψυχαγωγία > Καθημερινά ενημερωτικά θέματα
Ομάδες (Groups) Τοίχος Άρθρα acrobase.org Ημερολόγιο Φωτογραφίες Στατιστικά

Notices

Δεν έχετε δημιουργήσει όνομα χρήστη στην Acrobase.
Μπορείτε να το δημιουργήσετε εδώ

Απάντηση στο θέμα
 
Εργαλεία Θεμάτων Τρόποι εμφάνισης
  #1696  
Παλιά 04-06-11, 09:20
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 4

Dawn's Grand Finale
Image Credit & Copyright: Luis Argerich
Explanation: After more than a month, the lovely lineup of four naked-eye planets in dawn skies is coming to a close. Still, on May 31st a slender Moon joined the grouping along the eastern horizon for a final celestial performance, presented in this early morning scene from a beach near Buenos Aires, Argentina. A favorable view of the configuration in the southern hemisphere autumn, the photo was taken about 30 minutes before sunrise. In order from bottom to top, wandering Mercury, Venus, Mars, and Jupiter are stretched along the ecliptic plane. The Moon's sunlit crescent is sinking into the colorful twilight glow just left of Mercury. In dawns to come, Mars and Jupiter will continue to rise while Venus and Mercury sink toward the horizon, drawing closer to the rising Sun.

Tomorrow's picture: a sleeping beauty

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1697  
Παλιά 05-06-11, 08:32
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 5

Another Nearby Supernova in the Whirlpool Galaxy
Credit & Copyright: Stephane Lamotte Bailey, Marc Deldem, & Jean-Luc Dauvergne
Explanation: One of the brightest supernovas in recent years has just been recorded in the nearby Whirlpool galaxy (M51). Surprisingly, a seemingly similar supernova was recorded in M51 during 2005, following yet another one that occurred in 1994. Three supernovas in 17 years is a lot for single galaxy, and reasons for the supernova surge in M51 are being debated. Pictured above are two images of M51 taken with a small telescope: one taken on May 30 that does not show the supernova, and one taken on June 2 which does. The June 2 image is one of the first images reported to contain the supernova. The images are blinked to show the location of the exploded star. Although most supernovas follow classic brightness patterns, the precise brightening and dimming pattern of this or any supernova is hard to predict in advance and can tell astronomers much about what is happening. Currently, the M51 supernova, designated SN 2011dh, is still bright enough to follow with a small telescope. Therefore, sky enthusiasts are encouraged to image the Whirlpool galaxy as often as possible to fill in time gaps left by intermittent observations made by the world's most powerful telescopes. Views of the developing supernova are being uploaded here.
Tomorrow's picture: geometer's playground

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1698  
Παλιά 06-06-11, 08:47
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 6

Geometer's Playground Over Wyoming
Credit & Copyright: Robert Arn (Colorado St. U.)
Explanation: If you travel several kilometers off a main highway through Wyoming, you may see an unusual sight. In particular, near Buford, Wyoming, USA, you could run across the geometric Ames Monument, visible on the right, built to commemorate the financiers of a historic transcontinental railroad across North America. The above spectacular wide field mosaic, however, has also captured other geometric designs, many of them far in the distance. On the far left, for example, is a lunar halo surrounding by a lunar corona surrounding the setting Moon. On the right, however, is the arch of the central band of our Milky Way Galaxy surrounding the pyramidal structure. Illuminating the horizon to the right of the monument are the city lights of Cheyenne. The menagerie of images used to create this 360-degree composite were all taken during a single night last month. Still, the digital stitching of images taken over such a long period of time has led to a few unnatural land and sky justapositions. Can you identify any?

Tomorrow's picture: open space

Πηγή
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1699  
Παλιά 07-06-11, 08:44
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 7

A Last Landing for Space Shuttle Endeavour
Credit: NASA, Bill Ingalls
Explanation: Space shuttle Endeavour is home to stay. In a rare night landing last week, Endeavour glided onto a runway in Cape Canaveral, Florida, USA completing a 16-day mission that included a visit to the International Space Station (ISS). All told, space shuttle Endeavour flew 25 flights since being deployed by NASA in 1992, spending a total of 299 days in space. Endeavour's next mission will be a stationary one in the California Science Center. Even as Endeavour was landing, the space shuttle Atlantis was being rolled out in preparation for the last mission of any Space Shuttle, a mission currently scheduled to being on July 8.

Tomorrow's picture: last beginning

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1700  
Παλιά 08-06-11, 08:43
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 8

Space Shuttle and Space Station Photographed Together
Credit: NASA
Explanation: How was this picture taken? Usually, pictures of the shuttle, taken from space, are snapped from the space station. Commonly, pictures of the space station are snapped from the shuttle. How, then, can there be a picture of both the shuttle and the station together, taken from space? The answer is that during the Space Shuttle Endeavour's last trip to the International Space Station two weeks ago, a supply ship departed the station with astronauts that captured a series of rare views. The supply ship was the Russian Soyuz TMA-20 which landed in Kazakhstan later that day. The above spectacular image well captures the relative sizes of the station and docked shuttle. Far below, clouds of Earth are seen above a blue sea. The next and last launch of a US space shuttle is scheduled for early July.

Today's test flight: the IPv6 APOD Mirror site
Tomorrow's picture: southern skies

Πηγή

Σχόλιο : Πριν καν διαβάσω την περιγραφή, απόρησα γιατί αν θυμάμαι καλά είναι η πρώτη φωτογραφία που βλέπουμε ISS και διαστημικό λεωφορείο μαζί. Είναι τουλάχιστον εξαιρετική, μπράβο στο πλήρωμα του Soyuz.
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1701  
Παλιά 09-06-11, 08:38
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 9

The Great Carina Nebula
Image Credit & Copyright: Robert Gendler (Processing), Ryan Hannahoe (Acquisition)
Additional data from the ESO/Danish 1.5m telescope at La Silla, Chile (R.Gendler, J.-E.Ovaldsen, C.Thöne, C.Feron).
Explanation: A jewel of the southern sky, the Great Carina Nebula, also known as NGC 3372, spans over 300 light-years, one of our galaxy's largest star forming regions. Like the smaller, more northerly Great Orion Nebula, the Carina Nebula is easily visible to the unaided eye, though at a distance of 7,500 light-years it is some 5 times farther away. This gorgeous telescopic portrait reveals remarkable details of the region's glowing filaments of interstellar gas and obscuring cosmic dust clouds. Wider than the Full Moon in angular size, the field of view stretches nearly 100 light-years across the nebula. The Carina Nebula is home to young, extremely massive stars, including the still enigmatic variable Eta Carinae, a star with well over 100 times the mass of the Sun. Eta Carinae is the brightest star at the left, near the dusty Keyhole Nebula (NGC 3324). While Eta Carinae itself maybe on the verge of a supernova explosion, X-ray images indicate that the Great Carina Nebula has been a veritable supernova factory.

Tomorrow's picture: looking up

Πηγή
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1702  
Παλιά 10-06-11, 07:21
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 10

The Sun Unleashed
NASA / Goddard / SDO AIA Team
Explanation: On June 7, the Sun unleashed only a medium sized solar flare as rotation carried active regions of sunpots toward the solar limb. But that flare was followed by an astounding gush of magnetized plasma seen erupting at the Sun's edge in this extreme ultraviolet image from the Solar Dynamics Observatory. Spectacular movies of the event follow the darker, cooler plasma over a period of hours as it rains down across a broad area of the Sun's surface, arcing along otherwise invisible magnetic field lines. An associated coronal mass ejection, a massive cloud of high energy particles, was blasted in the general direction of the Earth and may have already triggered auroral activity after a glancing blow to Earth's magnetosphere.

Tomorrow's picture: supernovae in the whirlpool

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1703  
Παλιά 11-06-11, 07:39
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 11

Supernovae in the Whirlpool
Image Credit & Copyright: R Jay Gabany
Explanation: Where do spiral galaxies keep their supernovae? Near their massive star forming regions, of course, and those regions tend to lie along sweeping blue spiral arms. Because massive stars are very short-lived, they don't have a chance to wander far from their birth place. Remarkably, in the last 6 years two Type II supernovae, representing the death explosions of massive stars, have been detected in nearby spiral M51. Along with a third supernova seen in 1994, that amounts to a supernova bonanza for a single galaxy. As demonstrated in these comparison images, SN2005cs, the supernova discovered in 2005, and more recently SN2011dh, the exceptionally bright supernova first recorded just last month, both lie along M51's grand spiral arms. Perhaps the original spiral nebula, M51 is also known as the Whirlpool Galaxy.

Tomorrow's picture: a sleeping beauty

Πηγή
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1704  
Παλιά 12-06-11, 09:15
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 12

M64: The Sleeping Beauty Galaxy
Credit: NASA and the Hubble Heritage Team (AURA/STScI), S. Smartt (IoA) & D. Richstone (U. Michigan) et al.
Explanation: The Sleeping Beauty galaxy may appear peaceful at first sight but it is actually tossing and turning. In an unexpected twist, recent observations have shown that the gas in the outer regions of this photogenic spiral is rotating in the opposite direction from all of the stars! Collisions between gas in the inner and outer regions are creating many hot blue stars and pink emission nebula. The above image was taken by the Hubble Space Telescope in 2001 and released in 2004. The fascinating internal motions of M64, also cataloged as NGC 4826, are thought to be the result of a collision between a small galaxy and a large galaxy where the resultant mix has not yet settled down.

Tomorrow's picture: visit saturn

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1705  
Παλιά 13-06-11, 09:43
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2011 June 13


CASSINI MISSION
from Chris Abbas on Vimeo.

Views from Cassini at Saturn
Credit: Images: Cassini Imaging Team, ISS, JPL, ESA, NASA; Video Compilation: Chris Abbas;
Music Credit & License: Ghosts I-IV (Nine Inch Nails)
Explanation: What has the Cassini orbiter seen since arriving at Saturn? The above music video shows some of the highlights. In the first time-lapse sequence (00:07), a vertical line appears that is really Saturn's thin rings seen nearly edge-on. Soon some of Saturn's moon shoot past. The next sequence (00:11) features Saturn's unusually wavy F-ring that is constrained by the two shepherd moons that are also continually perturbing it. Soon much of Saturn's extensive ring system flashes by, sometimes juxtaposed to the grandeur of the immense planet itself. Cloud patterns on Titan (00:39) and Saturn (00:41) are highlighted. Clips from flyby's of several of Saturn's moon are then shown, including Phoebe, Mimas, Epimetheus, and Iapetus. In other sequences, moons of Saturn appear to pass each other as they orbit Saturn. Background star fields seen by Cassini are sometimes intruded upon by bright passing moons. The robotic Cassini spacecraft has been revolutionizing humanity's knowledge of Saturn and its moons since 2004.

Tomorrow's picture: universe next door

Πηγή

Σχόλιο : Δείτε αυτό το μοναδικό video σε πλήρη οθόνη. Δεν έχουμε ξαναδεί έτσι τον Κρόνο.
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα

Τελευταία επεξεργασία από το χρήστη Xenios : 13-06-11 στις 09:48
Απάντηση με παράθεση
  #1706  
Παλιά 14-06-11, 08:04
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 14

The Universe Nearby
Credit: 2MASS, T. H. Jarrett, J. Carpenter, & R. Hurt
Explanation: What does the universe nearby look like? This plot shows nearly 50,000 galaxies in the nearby universe detected by the Two Micron All Sky Survey (2MASS) in infrared light. The resulting image is anincredible tapestry of galaxies that provides limits on how the universe formed and evolved. The dark band across the image center is blocked by dust in the plane of our own Milky Way Galaxy. Away from the Galactic plane, however, each dot represents a galaxy, color coded to indicate distance. Bluer dots represent the nearer galaxies in the 2MASS survey, while redder dots indicating the more distant survey galaxies that lie at a redshift near 0.1. Named structures are annotated around the edges. Many galaxies are gravitationally bound together to form clusters, which themselves are loosely bound into superclusters, which in turn are sometimes seen to align over even larger scale structures.

Tomorrow's picture: open space

Πηγή
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1707  
Παλιά 15-06-11, 08:43
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 15

Millions of Stars in Omega Centauri
Image Credit & Copyright: Gordon Mandell
Explanation: Featured in this sharp telescopic image, globular star cluster Omega Centauri (NGC 5139) is some 15,000 light-years away. Some 150 light-years in diameter, the cluster is packed with about 10 million stars much older than the Sun. Omega Cen is the largest of 200 or so known globular clusters that roam the halo of our Milky Way galaxy. Though most star clusters consist of stars with the same age and composition, the enigmatic Omega Cen exhibits the presence of different stellar populations with a spread of ages and chemical abundances. In fact, Omega Cen may be the remnant core of a small galaxy merging with the Milky Way.

Tomorrow's picture: lingering lunar eclipse

Πηγή
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1708  
Παλιά 16-06-11, 08:37
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 16

Mercury's Surface in Exaggerated Color
Credit: NASA/JHU APL/CIW
Explanation: The robotic MESSENGER spacecraft recently completed over 100 orbits of Mercury. Messenger's cameras have recorded detailed pictures utilizing eight different colors across visible and near infrared light, exploring the surface composition and looking for clues to the history and evolution of the solar system's innermost planet. This sharp image combines three of the MESSENGER wide angle camera's colors, but in exaggerated fashion. Otherwise, to the unaided human eye, Mercury's surface colors would appear comparatively muted. The image is about 1,000 kilometers across and features as small as a single kilometer are discernible at the original resolution. Today, the Messenger project will release new images and science findings from the first spacecraft to orbit Mercury.

Tomorrow's picture: lingering lunar eclipse

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1709  
Παλιά 17-06-11, 08:03
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 17

Eclipsed Moon in the Milky Way
Image Credit & Copyright: Babak Tafreshi (TWAN)
Explanation: On June 15, the totally eclipsed Moon was very dark, with the Moon itself positioned on the sky toward the center of our Milky Way Galaxy. This simple panorama captures totality from northern Iran in 8 consecutive exposures each 40 seconds long. In the evocative scene, the dark of the eclipsed Moon competes with the Milky Way's faint glow. The tantalizing red lunar disk lies just above the bowl of the dark Pipe Nebula, to the right of the glowing Lagoon and Trifid nebulae and the central Milky Way dust clouds. At the far right, the wide field is anchored by yellow Antares and the colorful clouds of Rho Ophiuchi. To identify other sights of the central Milky Way just slide your cursor over the image. The total phase of this first lunar eclipse of 2011 lasted an impressive 100 minutes. Parts of the eclipse were visible from most of planet Earth, with notable exceptions of North and Central America.

Tomorrow's picture: all the sunsets

Πηγή
__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
  #1710  
Παλιά 18-06-11, 08:52
Το avatar του χρήστη Xenios
Xenios Ο χρήστης Xenios δεν είναι συνδεδεμένος
Administrator
 

Τελευταία φορά Online: 12-11-16 11:12
Φύλο: Άντρας
Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2011 June 18

Lightning Eclipse from the Planet of the Goats
Credit & Copyright: Chris Kotsiopoulos (GreekSky)
Explanation: Thunderstorms almost spoiled this view of the spectacular June 15 total lunar eclipse. Instead, storm clouds parted for 10 minutes during the total eclipse phase and lightning bolts contributed to the dramatic sky. Captured with a 30 second exposure the scene also inspired what, in the 16 year history of Astronomy Picture of the Day, the editor considers may be the best title yet for a picture (title credit to Chris K.). Of course, the lightning reference clearly makes sense, and the shadow play of the dark lunar eclipse was widely viewed across planet Earth in Europe, Africa, Asia, and Australia. The picture itself, however, was shot from the Greek Ikaria island at Pezi. That area is known as "the planet of the goats" because of the rough terrain and strange looking rocks.

Tomorrow's picture: regolithic

__________________
όταν γράφεται η ιστορία της ζωής σου,
μην αφήνεις κανέναν να κρατάει την πένα
Απάντηση με παράθεση
Απάντηση στο θέμα


Συνδεδεμένοι χρήστες που διαβάζουν αυτό το θέμα: 7 (0 μέλη και 7 επισκέπτες)
 
Εργαλεία Θεμάτων
Τρόποι εμφάνισης

Δικαιώματα - Επιλογές
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is σε λειτουργία
Τα Smilies είναι σε λειτουργία
Ο κώδικας [IMG] είναι σε λειτουργία
Ο κώδικας HTML είναι σε λειτουργία

Που θέλετε να σας πάμε;


Όλες οι ώρες είναι GMT +3. Η ώρα τώρα είναι 09:50.



Forum engine powered by : vBulletin Version 3.8.2
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.