On May 20, 1990, the Hubble Space Telescope sent its first image to Earth. This photo turned out to be 50% sharper than ...
Such a dramatic cut to a flagship space telescope still in its prime will be felt across the mission's entire operations, ...
Since Hubble’s launch, astronomers have discovered over 1 trillion galaxies, but Andromeda stands out as the closest and most ...
On December 25, 2021, the largest and most powerful space telescope, the James Webb Space Telescope, was launched into space ...
In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small ...
There are questions that have been on the human mind for hundreds of years. Many of them, of course, are related to the ...
The space telescope Gaia has created the largest three-dimensional map of the Milky Way ever. On January 15, 2025, Gaia shut ...
NASA's New Horizons Pluto probe is gearing up to cross the "termination shock," an exotic boundary in the outer solar system, ...
Temperamental' stars that brighten and dim over a matter of hours or days may be distorting our view of thousands of distant ...
A star racing through the Milky Way may have a planet in tow, setting a new speed record for exoplanet systems. Using microlensing, astronomers spotted the pair moving at over 1.2 million mph.
The flash was spotted by the Einstein Probe’s Wide-field X-ray Telescope (WXT), which uses a novel type of design known as a ...
Callisto, the third largest moon in the entire solar system, orbits Jupiter from about 1.2 million miles away. The rocky ...