New 3I/ATLAS images from NASA and the ESA suggest the interstellar comet is active as it approaches Earth in December.

Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other ...

According to NASA, Hubble took its latest photo of 3I/ATLAS on November 30 using its Wide Field Camera 3 instrument. At that ...

Fresh images from NASA's Hubble reveal the unusual features of interstellar comet 3I/ATLAS, offering insights into alien ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

"It means cleaning house, narrowing the viable paths forward, and no longer spending energy on what are evidently dead ends." ...

Light pollution from the exploding number of satellites orbiting Earth is making it harder to peer into space.

Proliferating satellites are beginning to harm the science work of the beloved Hubble Space Telescope and other observatories ...

Footage from NASA/ESA Hubble Space Telescope that celebrates 35 years in space. Images of Mars, planetary nebula NGC 2899, ...

Satellites reflect sunlight, Earthshine, infrared and radio waves.

More than half a million satellites are planned to launch by the end of the 2030s, and simulations suggest they will have a ...