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APOD: 2012 August 23 - Conjunction Colours

APOD: 2012 August 23 - Conjunction Colours | Astronomy Domain | Scoop.it

Explanation: During the past week, nightfall on planet Earth has featured Mars, Saturn, and Spica in a lovely conjunction near the western horizon. Still forming the corners of a distinctive celestial triangle after sunset and recently joined by a crescent Moon, they are all about the same brightness but can exhibit different colors to the discerning eye. This ingenious star trail image was recorded as the trio set on August 12 with a telephoto lens from the shores of Lake Eppalock, in central Victoria, Australia. Focused on foreground eucalyptus trees, the image slightly blurs the trails to show more saturated colors. Can you guess which trail is which? Of course thereddest trail is Mars, with Saturn on the right a paler echo of the Red Planet's hue. Left is hot and luminous Spica, bluish alpha star of the constellation Virgo.

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If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system

If the Moon Were Only 1 Pixel - A tediously accurate map of the solar system | Astronomy Domain | Scoop.it
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From now, you will realize how BIG is space... and how ridiculously small are we all, down here.

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The Cliffs of Comet Churyumov–Gerasimenko

The Cliffs of Comet Churyumov–Gerasimenko | Astronomy Domain | Scoop.it

These high cliffs occur on the surface of a comet. They were discovered to be part of the dark nucleus of Comet Churyumov–Gerasimenko (CG) by Rosetta, a robotic spacecraft launched by ESAwhich began orbiting the comet in early August. The ragged cliffs, as featured here, were imaged by Rosetta about two weeks ago. Although towering about one kilometer high, the low surface gravity of Comet CG would likely make a jump from the cliffs, by a human, survivable. At the foot of the cliffs is relatively smooth terrain dotted with boulders as large as 20 meters across. Data from Rosetta indicates that the ice in Comet CG has a significantly different deuterium fraction -- and hence likely a different origin -- than the water in Earth's oceans. The Rosetta spacecraft is scheduled to continue to accompany the comet as it makes its closest approach to the Sun in 2015 August.

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ISS HD Earth Viewing Experiment

ISS HD Earth Viewing Experiment @ USTREAM: ***QUICK NOTES ABOUT HDEV VIDEO***
Black Image = International Space Station (ISS) is on the night side of the E...
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Real-time view of our planet from the ISS!
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Giant Gamma-Ray Detector Searches for 2 Home Sites

Giant Gamma-Ray Detector Searches for 2 Home Sites | Astronomy Domain | Scoop.it
The Cherenkov Telescope Array will track high-energy photons to probe black holes, dark matter and relativity (Giant #Gamma Ray Detector Searches for Two Home Sites - @CTA_Telescope - http://t.co/OHd1vpyWOE)...
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Astronomers witness mysterious, never-before-seen disintegration of asteroid

Astronomers witness mysterious, never-before-seen disintegration of asteroid | Astronomy Domain | Scoop.it
“Astronomers have witnessed the never-before-seen breakup of an asteroid into as many as 10 smaller pieces.”
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Martian Sunset (Spirit rover)

Martian Sunset (Spirit rover) | Astronomy Domain | Scoop.it
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Explanation: What would it be like to see a sunset on Mars? To help find out, the robotic rover Spirit was deployed in 2005 to park and watch the Sun dip serenely below the distant lip of Gusev crater. Colors in theabove image have been slightly exaggerated but would likely be apparent to a human explorer's eye. Fine martian dust particles suspended in the thin atmosphere lend the sky a reddish color, but the dust also scatters blue light in the forward direction, creating a bluish sky glow near the setting Sun. Because Mars is farther away, the Sun is less bright and only about two thirds the diameter it appears from Earth. Images like this help atmospheric scientists understand not only the atmosphere of Mars, but atmospheres across the Solar System, including our home Earth.

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Galaxy Crash Spawns Space Penguin in Hubble Telescope Photo - Space.com

Galaxy Crash Spawns Space Penguin in Hubble Telescope Photo - Space.com | Astronomy Domain | Scoop.it
Galaxy Crash Spawns Space Penguin in Hubble Telescope Photo
Space.com
A cosmic penguin shines 326 million light-years from Earth in a stunning new photo from the Hubble Space Telescope.
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Star Size Comparison HD AudioV2

This is an upload of my star size comparison video for the countries in which the original one has been blocked, due to copyrigt issues of the audio track. I...
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An impressive journey from planets to stars... Imagine that it would take more than 1000 years to make a complete circle around the biggest known star, using a moder airplane!

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Le rayonnement fossile, et ce que Planck nous en révèle

Le rayonnement fossile, et ce que Planck nous en révèle | Astronomy Domain | Scoop.it
Si vous suivez l'actualité, l'image ci-contre doit vous être familière. Il s'agit de la carte du rayonnement fossile de l'Univers, publiée cette semaine en grande pompe par l'Agence Spatiale Europé...
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Mars Mission Marks Milestone in India's Space Program - Voice of America

Mars Mission Marks Milestone in India's Space Program - Voice of America | Astronomy Domain | Scoop.it
Voice of America Mars Mission Marks Milestone in India's Space Program Voice of America The Mars mission marks a fundamental shift in India's space mission.
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Apocalypse postponed: how Earth survived Halley's comet in 1910 - The Guardian (blog)

Apocalypse postponed: how Earth survived Halley's comet in 1910 - The Guardian (blog) | Astronomy Domain | Scoop.it
Science Recorder Apocalypse postponed: how Earth survived Halley's comet in 1910 The Guardian (blog) Comet Halley against the Milky Way In 1910, the Earth was due to pass through the tail of Halley's Comet, sparking a public panic that apocalypse...
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Astronomy: Stars Reveal the Secret of Aging Well - Science Daily (press release)

Astronomy: Stars Reveal the Secret of Aging Well - Science Daily (press release) | Astronomy Domain | Scoop.it
Astronomy: Stars Reveal the Secret of Aging Well Science Daily (press release) But while the stars are old and the clusters formed in the distant past, astronomers using the NASA/ESA Hubble Space Telescope and the MPG/ESO 2.2-metre telescope at the...
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Hubble Telescope Captures Best View Ever of the Andromeda Galaxy

Hubble Telescope Captures Best View Ever of the Andromeda Galaxy | Astronomy Domain | Scoop.it
The Hubble Space Telescope has captured an amazing new viewof the Andromeda Galaxy. The new mosaic image represents the sharpest and largest mosaic image of the Milky Way's galactic neighbor ever taken, Hubble officials said.
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Absolutely stunning zoomable view of a third of the Andromeda galaxy. I realized that the pale colored veils that make the 'body' of a galaxy are in fact a dense fabric of red, yellow and blue stars. A hundred million of stars...

http://www.spacetelescope.org/images/heic1502a/zoomable/

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APOD: 2014 May 29 - Millions of Stars in Omega Centauri

APOD: 2014 May 29 - Millions of Stars in Omega Centauri | Astronomy Domain | Scoop.it

Explanation: Globular star cluster Omega Centauri, also known as NGC 5139, is some 15,000 light-years away. The cluster is packed with about 10 million stars much older than the Sun within a volume about 150 light-years in diameter, the largest and brightest 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.This astronomically sharp color image of the classic globular cluster was recorded in March under Chilean skies from Hacienda Los Andes.

 

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Zooming in on the nearby brown dwarf Luhman 16B

Zooming in on the nearby brown dwarf Luhman 16B | Astronomy Domain | Scoop.it

Video Archive

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This video starts with a broad view of the entire sky and closes in on the southern constellation of Vela (The Sails). In the final sequence, among huge numbers of faint stars, a very faint double object appears. This is WISE J104915.57-531906.1AB, which is informally known as Luhman 16AB. It is a recently discovered pair of brown dwarfs only six light-years from the Sun.

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Another Earth? Astronomers Find Earth-Size Planet in Its Star's Habitable Zone - Slate Magazine (blog)

Another Earth? Astronomers Find Earth-Size Planet in Its Star's Habitable Zone - Slate Magazine (blog) | Astronomy Domain | Scoop.it
Slate Magazine (blog)
Another Earth? Astronomers Find Earth-Size Planet in Its Star's Habitable Zone Slate Magazine (blog) I have some cautiously exciting exoplanets news: Astronomers have announced the discovery of a planet that is very nearly the...
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Hacking the Van Allen Belts - IEEE Spectrum

Hacking the Van Allen Belts - IEEE Spectrum | Astronomy Domain | Scoop.it
“Could we save satellites and astronauts by wiping out the Van Allen belts? (Hacking the Van Allen Belts - IEEE Spectrum... http://t.co/75F5ExD4JA)”
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Bizarre star could host a neutron star in its core

Bizarre star could host a neutron star in its core | Astronomy Domain | Scoop.it
Astronomers spot best candidate for a Thorne-Zytkow object, a hybrid star proposed almost 40 years ago.
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APOD: 2013 June 22 - Perigee s Full Moon

APOD: 2013 June 22 - Perigee s Full Moon | Astronomy Domain | Scoop.it
A different astronomy and space science
related image is featured each day, along with a brief explanation.
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Sunday, we will be very close to an old friend...

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nativemedia's comment, September 25, 2013 12:27 AM
really nice
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A hidden population of exotic neutron stars - Astronomy Magazine

A hidden population of exotic neutron stars - Astronomy Magazine | Astronomy Domain | Scoop.it
A major campaign using NASA’s Chandra X-ray Observatory shows magnetars — exotic neutron stars — may be more diverse — and common — than previously thought.
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NASA scientists have discovered stars that are cool enough to touch

NASA scientists have discovered stars that are cool enough to touch | Astronomy Domain | Scoop.it
Last year, NASA announced that it had discovered 14 of the coldest stars it had ever recorded. The so-called "brown dwarfs" were, at that time, listed among the coldest known stars in our universe.
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Are there really countless brown dwarf surrounding us?
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APOD: 2012 December 21 - Orion over El Castillo

APOD: 2012 December 21 - Orion over El Castillo | Astronomy Domain | Scoop.it

Welcome to the December solstice, a day the world does not end ...

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Astronomers Discover Earth-Like Planet Close to Us

Astronomers Discover Earth-Like Planet Close to Us | Astronomy Domain | Scoop.it
This is really exciting: an international team of astronomers has discovered that Tau Ceti, the closest single star like our Sun, has planets just like our solar system.
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Coursera : Introduction to Astronomy

Coursera : Introduction to Astronomy | Astronomy Domain | Scoop.it

About the Course

In this class, we will be studying, quite literally, everything in the universe. We will start with "classical" astronomy, describing the night sky and organizing what we see as was done in ancient times. We will then embark on a journey, starting here on Earth and progressing outward, to study the Solar system, the Milky Way galaxy, and the wonderful and strange objects we observe in deep space, such as black holes, quasars, and supernovae. We will end with some discussion of what scientists know today about the universe as a whole. Along the way we will introduce some of the methods, theoretical and experimental, that have been used to understand all of this, from Newton's laws, through our understanding of light and matter, to Einstein's theory of relativity, and from Galileo's telescope to WMAP.

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