Lei Den's posts with tag: galaxy
FEB. 3 2008 Light Echoes from V838 MonCredit: NASA and the Hubble Heritage Team (AURA/STScI) What caused this outburst of V838 Mon? For reasons unknown, star V838 Mon's outer surface suddenly greatly expanded with the result that it became the brightest star in the entire Milky Way Galaxy in January 2002. Then, just as suddenly, it faded. A stellar flash like this has never been seen before -- supernovas and novas expel matter out into space. Although the V838 Mon flash appears to expel material into space, what is seen in the above image from the Hubble Space Telescope is actually an outwardly moving light echo of the bright flash. In a light echo, light from the flash is reflected by successively more distant rings in the complex array of ambient interstellar dust that already surrounded the star. V838 Mon lies about 20,000 light years away toward the constellation of the unicorn (Monoceros), while the light echo above spans about six light years in diameter.
Astronomy Picture of the Day
 When I consider thy heavens, the work of thy fingers,
the moon and the stars, which thou hast ordained;
What is man, that thou art mindful of him?
and the son of man, that thou visitest him? 
Psalms 8:3
Kapag pinagmamasdan ko ang iyong kalangitan, ang gawa ng iyong mga daliri, ang buwan at ang mga bituin na iyong inilagay;
ano ang tao upang siya'y iyong alalahanin?
At ang anak ng tao upang siya'y iyong kalingain?
Mga Awit 8:3
 Earthrise from Moon-Orbiting KaguyaCredit & Copyright: SELENE Team, JAXA, NHK What does the Earth look like from the Moon? A new version of this space age perspective was captured by the robotic Kaguya spacecraft currently in orbit around Earth's Moon. Launched two months ago by Japan, the scientific mission of the Selenological and Engineering Explorer (SELENE), nicknamed Kaguya, is to study the origin and evolution of the Moon. Last month Kaguya reached lunar orbit and starting transmitting data and images. This frame is from Kaguya's onboard HDTV camera. An astronaut standing on the lunar surface would never actually see the Earth rise, since the Moon always keeps the same side toward the Earth. This Earthrise as well as the famous Earthrise captured 40 years ago by the crew of Apollo 8, only occurs for observers in lunar orbit. Astronomy Picture of the Day
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