Data from ESA's Gaia mission is re-writing the history of our galaxy, the Milky Way. What had traditionally been thought of as satellite galaxies to the Milky Way are now revealed to be mostly newcomers to our galactic environment.
Astronomy
Nov 25, 2021
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3016
An international team of astronomers has reported the discovery of a structure thought to be a "protocluster" of galaxies on its way to developing into a galaxy supercluster. Located 11 billion light-years from Earth, the ...
Astronomy
Oct 27, 2021
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408
Using the Hubble Space Telescope (HST), astronomers have detected three new ultra-faint dwarf galaxies associated with the nearby spiral galaxy NGC 253. The newly found dwarfs turn out to be among the faintest systems so ...
Historically most scientists thought that once a satellite galaxy has passed close by its higher mass parent galaxy, its star formation would stop because the larger galaxy would remove the gas from it, leaving it shorn of ...
Astronomy
Jul 06, 2021
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621
Research combining systematic observations with cosmological simulations has found that, surprisingly, black holes can help certain galaxies form new stars. On scales of galaxies, the role of supermassive black holes for ...
Astronomy
Jun 14, 2021
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6
An international team of astrophysicists led by the Stellar Astrophysics Group of the University of Alicante (UA), the Instituto de Astrofísica de Canarias (IAC), and the University of Valparaíso (Chile) has discovered ...
Astronomy
Jun 02, 2021
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306
In results announced this week at the 237th Meeting of the American Astronomical Society, scientists from the Sloan Digital Sky survey present the most detailed look yet at the warp of our own galaxy.
Astronomy
Jan 19, 2021
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1366
Our Milky Way is not alone in the universe. Surrounding us are numerous satellite galaxies, taking part in a continuous grand dance. But how do these neighbouring galaxies behave, how do they interact with our galaxy, and ...
Astronomy
Dec 09, 2020
5
34
Launched in 2013, ESA's Gaia satellite has been scanning the sky to measure the positions, distances and motions of more than one billion stars in our galaxy, the Milky Way. The goal of the mission is to create the most detailed ...
Astronomy
May 25, 2020
0
94
We live in a big-city galaxy. The Milky Way is so big it has satellite galaxies that orbit it, just as the Moon orbits the Earth. These arrangements tell us a great deal about the secrets of the universe—from how galaxies ...
Astronomy
May 18, 2020
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922
