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Thursday, February 20, 2020
A Lot Of Galaxies Are Moving Far From United States As deep space Expands. Not This One.

A Lot Of Galaxies Are Moving Far From United States As...

A view of the galaxy Messier 90 from the Hubble Space Telescope. This galaxy is about 60 million light-years from the Milky Way, but it's moving closer. Credit: ESA/Hubble & NASA, W. Sargent et al. A gorgeous new photo from the Hubble Space Telescope depicts Messier 90, a spiral galaxy roughly 60 million light-years away…
Is Dark Matter Made From Axions? Great Voids Might Expose the Response

Is Dark Matter Made From Axions? Great Voids Might Expose the...

What is dark matter made of? It’s one of the most perplexing questions of modern astronomy. We know that dark matter is out there, since we can see its obvious gravitational influence on everything from galaxies to the evolution of the entire universe, but we don’t know what it is. Our best guess is that…
16 Years of Hubble Images Come Together in this one Image Containing 265,000 Galaxies

16 Years of Hubble Images Come Together in this one Image...

Even after almost three decades of faithful service, the Hubble Space Telescope continues to operate and provide breathtaking images of the cosmos. As one of NASA’s Great Observatories, its observations of distant galaxies, exoplanets, and the expansion of the Universe have had a revolutionary impact on astronomy, astrophysics and cosmology. Hubble’s latest contribution comes in…
What Will the James Webb Area Telescope See? An Entire Lot of Dust, That’s What

What Will the James Webb Area Telescope See? An Entire Lot...

When it comes to the first galaxies, the James Webb Space Telescope will attempt to understand the formation of those galaxies and their link to the underlying dark matter. In case you didn’t know, most of the matter in our universe is invisible (a.k.a. “dark”), but its gravity binds everything together, including galaxies. So by…
Buoyancy: The Force That Raises Whatever From Balloons To Galaxies

Buoyancy: The Force That Raises Whatever From Balloons To Galaxies

Hot air balloon flying over amazing mountains. Isn't buoyancy awesome? Getty Ah, the stately hot air balloon. Not really useful for all that much except for having a grand old time floating around the skies, it's still a marvel of simple physics. Fill a giant balloon with air. Heat up the air. The balloon goes…
This is What It’ll Appear like When the Galaxy and Andromeda Galaxies Collide Billions of Years from Now

This is What It’ll Appear like When the Galaxy and Andromeda...

What happens when two galaxies collide? The Milky Way and the Andromeda Galaxy are on a collision course, and in about 4.5 billion years, they will meet. Now astronomers using the Hubble have provided some visual insight into what that collision might look like. When two galaxies collide, it’s highly unlikely that any stars will…
Enormous Photons Might Describe Dark Matter, However Do Not

Enormous Photons Might Describe Dark Matter, However Do Not

I’ll be the first to admit that we don’t understand dark matter. We do know for sure that something funny is going on at large scales in the universe (“large” here meaning at least as big as galaxies). In short, the numbers just aren’t adding up. For example, when we look at a galaxy and…
Thanks to Gaia, We Now Know Precisely When We’ll be Hitting Andromeda

Thanks to Gaia, We Now Know Precisely When We’ll be Hitting...

Astronomers have known for some time that the Milky Way and the Andromeda galaxies will collide on some future date. The best guess for that rendezvous has been about 3.75 billion years from now. But now a new study based on Data Release 2 from the ESA’s Gaia mission is bringing some clarity to this…
Galaxy Clusters Are Where Galaxies Like The Galaxy Go To Pass Away

Galaxy Clusters Are Where Galaxies Like The Galaxy Go To Pass...

Galaxies that speed through the intergalactic medium will have their gas and material stripped away, which will lead to a trail of stars formed in the wake of the expelled material, but will prevent new stars from forming within the galaxy itself. This galaxy, above, is in the process of being stripped away of its…
Sensational New Map of the Galaxy Reveals 800 Million Stars, Galaxies and Near-Earth Asteroids

Sensational New Map of the Galaxy Reveals 800 Million Stars, Galaxies...

This map of the cosmos shows roughly 800 million stars in the neighborhood of the Milky Way. It compiles four years' worth of data from the Pan-STARRS observatory in Maui, Hawaii. Credit: R. White (STScI) and the PS1 Science Consortium At first, it looks like a planet: dark, snow-speckled and slashed down the center by…

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