A mystery interstellar object spotted last week by astronomers could be the oldest comet ever seen, according to scientists.

When the news started to spread on July 1, 2025, about a new object that was spotted from outside our solar system, only the ...

The European Southern Observatory has captured the clearest images yet of the interstellar visitor 3I/ATLAS as it moves ...

Stars often die with a final burst of beauty. For the first time, astronomers have captured visual proof that a star can ...

ESO's Extremely Large Telescope at Cerro Armazones in Chile's Atacama Desert is seen from directly above while its construction continues.

A new observatory in Chile has produced a stunningly detailed image of a nebula resembling cotton candy, using the largest ...

Texas astronomers are part of the effort to construct the Giant Magellan Telescope – an effort that will bring a new level of ...

This image, taken with ESO’s Very Large Telescope (VLT), shows the supernova remnant SNR 0509-67.5. These are the expanding ...

Astronomers are excited about the first test images released today from the Vera C. Rubin Observatory, which show the ...

The GMT will be one of several telescopes in Chile, including the “Very Large Telescope” and “Extremely Large Telescope.” The VLT has operated since 1998. The ELT is under construction and will have ...

Scientists have obtained photographic evidence of a double-detonation Type Ia supernova for the first time. This rare cosmic ...

The Vera C. Rubin Observatory's primary mirror is 8.4 meters in diameter, which makes it one of the largest optical telescopes in the world. However, the real secret sauce of the telescope is its ...