earth16h
100 years ago: Edwin Hubble proved the Milky Way is not the only galaxy in the universe
In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...
earth2d
Two enormous "bubbles" discovered towering above and below our Milky Way galaxy
In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...
ESA’s Gaia Spacecraft Wraps Up Revolutionary Milky Way Mapping Mission
ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.
One large Milky Way galaxy or many galaxies? 100 years ago, Edwin Hubble settled astronomy's 'Great Debate'
A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...
Peculiar icy objects in outer reaches of the Milky Way perplex astronomers
A trio of astronomers from the University of Tokyo and Niigata University have found what they describe as "peculiar embedded ...
South African telescope uncovers massive galaxy 32 times larger than Earth’s Milky Way
MeerKAT’s newest giant radio galaxy find is extraordinary. The plasma jets of this cosmic giant span 3.3 million light-years ...
Gaia Completes Its Stellar Odyssey, Leaving a Cosmic Legacy
The Gaia mission, launched by the European Space Agency, has completed a decade of groundbreaking astronomical observations, collecting over three trillion data points on two billion stars and ...
NASA’s new SPHEREx telescope set to launch in February: What makes it unique and what will it discover?
NASA's SPHEREx mission, set to launch in February 2025, will utilize an advanced infrared telescope to map the entire sky in ...
NASA’s SPHEREx Will Unveil the Hidden Spectrum of the Cosmos
SPHEREx is a groundbreaking NASA telescope that will map the entire sky in infrared, revealing insights into cosmic inflation ...