Giant cosmic tsunami wakes up comatose galaxies

Galaxies are often found in clusters, with many 'red and dead' neighbours that stopped forming stars in the distant past. Now an international team of astronomers, led by Andra Stroe of Leiden Observatory and David Sobral ...

Hubble and Gaia accurately weigh the Milky Way

In a striking example of multi-mission astronomy, measurements from the NASA/ESA Hubble Space Telescope and the ESA Gaia mission have been combined to improve the estimate of the mass of our home galaxy the Milky Way: 1.5 ...

A serendipitous gravitational lens

(PhysOrg.com) -- The path traveled by a light beam will bend in the presence of matter. This remarkable prediction, reached by Einstein in his theory of general relativity, was confirmed by observations of the solar eclipse ...

Astronomers now know how far the Earth is from 200 galaxies

On July 11, 2022, the very first image taken by the James Webb Space Telescope (JWST) was released to the general public. It's called Webb's First Deep Field, centered on a cluster of galaxies named SMACS 0723 and containing ...

Exactly how massive is the Milky Way?

How do you weigh a galaxy? It's an astronomical challenge, particularly if it's the galaxy you call home. It turns out there are several ways to get a handle on the mass of the Milky Way, and a recent study posted on the ...

The universe can't hide behind the Zone of Avoidance any longer

Our view of the cosmos is always limited by the fact we are located within a galaxy filled with interstellar gas and dust. This is most dramatically seen in the central region of the Milky Way, which is filled with so much ...

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