The spacetime diagram (“a position vs time graph”) is a valuable tool for modeling and interpreting situations in relativity. As I like ...
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Showing posts with label astronomy. Show all posts
Showing posts with label astronomy. Show all posts
Free Astronomy Books
Free Astronomy Books - Primarily for education. Feel free to add your own links to free books. Let me know if there are broken links or...
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Solstice Illuminated: A Year of Sky
Explanation: Can you find which day is the winter solstice? Each panel shows one day. With 360 movie panels, the sky over (almost) an en...
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The Milky Way Galaxy
Our magnificent Milky Way Galaxy sprawls across this ambitious all-sky panorama. In fact, at 800 million pixels the full resolution mosa...
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The Dark Energy Survey
The Dark Energy Survey aims to answer that question, and UCL, Cambridge and other UK astrophysicists are heavily involved in the collab...
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Star Factory Messier 17
Image Credit & Copyright : Data - ESO / MPIA / OAC , Assembly - R.Colombari Sculpted by stellar winds and radiation, the star...
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Starburst Galaxy Messier 94
Image Credit: ESA/Hubble and NASA Beautiful island universe Messier 94 lies a mere 15 million light-years distant in the northern con...
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Charon and the Small Moons of Pluto
Image Credit: NASA , Johns Hopkins U. APL , SwRI What do the moons of Pluto look like? Before a decade ago, only the largest moon C...
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Galileo's Europa Remastered
Looping through the Jovian system in the late 1990s, the Galileo spacecraft recorded stunning views of Europa and uncovered evidence tha...
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The Creature from the Red Lagoon
What creature lurks near the red Lagoon nebula? Mars. This gorgeous color deep-sky photograph has captured the red planet passing below tw...
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Portrait of NGC 281
Look through the cosmic cloud cataloged as NGC 281 and you might miss the stars of open cluster IC 1590. But, formed within the nebula, tha...
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The Seahorse of the Large Magellanic Cloud
It may look like a grazing seahorse , but the dark object toward the image right is actually a dust about 20 light years long. The curiou...
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Stars and Dust Pillars in NGC 7822 from WISE
Hot, young stars and cosmic pillars of gas and dust seem to crowd into NGC 7822. At the edge of a giant molecular cloud toward the norther...
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Orion in Gas, Dust, and Stars
The constellation of Orion holds much more than three stars in a row. A deep exposure shows everything from dark nebula to star clusters, ...
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The Day After Mars
October 31, 1938 was the day after Martians encountered planet Earth, and everything was calm. Reports of the invasion were revealed to...
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A Spectre in the Eastern Veil
Frightening forms and scary faces are a mark of the Halloween season. They also haunt this cosmic close-up of the eastern Veil Nebul...
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Welcome to a Comet, from Lander on Surface
The Philae lander of the European Space Agency’s Rosetta mission is safely on the surface of Comet 67P/Churyumov-Gerasimenko, as these fir...
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Descent to a Comet
Yesterday, the first soft landing on a comet took place some 500 million kilometers from planet Earth as the Rosetta mission lander Ph...
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The Cave Nebula
This colorful skyscape features the dusty Sharpless catalog emission region Sh2-155, the Cave Nebula. In the composite image, data take...
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The Cat’s Eye Nebula from Hubble
To some, it may look like a cat’s eye. The alluring Cat’s Eye nebula, however, lies three thousand light-years from Earth across inter...
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