A Soviet-era spacecraft meant to land on Venus a half century ago is expected to plunge uncontrolled back to Earth within ...

Some recent spaceflight spectacles offer hints about what you might see if Kosmos 482 happens to fall through the sky above ...

The most recent measurement of a nearby galaxy cluster is deepening a disagreement about how fast the universe is expanding — ...

On May 20, 1990, the Hubble Space Telescope sent its first image to Earth. This photo turned out to be 50% sharper than ...