NASA's $10 billion space telescope studied the third interstellar object to enter the solar system, measuring the chemical ...

Called 3I/ATLAS, the object is only the third of its kind known to astronomers, and it’s likely been heading our way for ...

A telescope in Chile recently glimpsed 3I/ATLAS' glowing tail, which observations reveal has grown as the interstellar object ...

Here is everything I saw with a smart telescope in a light-polluted city including galaxies, nebulas and star clusters.

The "potentially hazardous" asteroid 2025 FA22 will fly close past Earth at more than 24,000 mph on Thursday (Sept. 18). The ...

The interstellar comet 3I/ATLAS, a rare visitor from outside the Solar System, might have been spewing gases for months ...

Technological limitations for manufacturing large, round telescopes has experts considering unconventional shapes to improve ...

The James Webb Space Telescope cannot observe Earth directly. It is too bright and could damage the telescope. However, ...

Scientists created the most accurate three-dimensional map of star-formation regions in our Milky Way galaxy, based on data ...

The world's greatest space telescopes have all been round. Now, a new rectangular design could turbocharge our search for ...

Exoplanet TRAPPIST-1 e may contain an atmosphere and liquid water, NASA scientists said. Research into the exoplanet is ...

Two more of NASA's space telescopes got another look at comet 3I/ATLAS, an interstellar interloper that captured the world's attention in July 2025.