Tag: Cosmology
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Hubble reveals 10 times more galaxies than scientists thought were out there
A deep-field image from the Great Observatories Origins Deep Survey, or GOODS, shows a scattering of distant galaxies. (Credit: NASA / ESA / GOODS Team / M. Giavialisco / UMass-Amherst) It looks as if astronomers have been way, way off on their galaxy counts: A new analysis of data from the Hubble Space Telescope suggests…
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First map from Europe’s Gaia satellite charts a billion stars in our Milky Way
This composite image shows an all-sky view of stars in our Milky Way galaxy, plus neighboring galaxies. Click on the image for a larger, annotated version. (Credit: ESA / Gaia / DPAC) The team behind the European Space Agency’s Gaia satellite has released its first catalog of more than a billion stars in our Milky Way…
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This galaxy is made of 99.99% dark matter
The dark galaxy Dragonfly 44 appears to have about as much mass as our own Milky Way galaxy, but only 0.01 percent of that mass is in the form of stars and normal matter. The rest is dark matter, scientists say. (Credit: Pieter van Dokkum and Roberto Abraham / Gemini Observatory / AURA) About 85…
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Maybe black holes (and wormholes) aren’t as monstrous as we thought
Here’s one concept for the look of a black hole. Image: Ute Kraus, [CC BY-SA 2.5] via Wikimedia Commons Black holes may have gotten a bad rap. And wormholes just might be a realistic way to travel Star Trek-style after all. Years ago, the traditional wisdom about those exotic cosmic phenomena was pretty forbidding: Once…
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Far out! Hubble astronomers set record for spotting most distant galaxy (again)
This image locates galaxy GN-z11 in the northern hemisphere field of the Hubble GOODS survey, which takes in tens of thousands of galaxies stretching far back into time. GN-z11, shown in the inset, is seen as it was 13.4 billion years in the past, just 400 million years after the big bang, when the universe…
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Symphonic SpaceFest: ‘Origins’ concert sets the Big Bang and astrobiology to music
An artist’s conception shows two “branes” colliding in multidimensional space, creating the Big Bang that gave rise to our own universe 13.8 billion years ago. (Animation by Deep Sky Studios) The Big Bang never looked, or sounded, so good: The piece de resistance for this week’s SpaceFest in Seattle is a symphonic review of 13.8…