I/ATLAS is the third-known interstellar object to enter our solar system. It was discovered on 1 July 2025 by the ATLAS ...

The November 2025 supermoon in Arizona will shine larger and brighter than a normal full moon on Wednesday night. The moon ...

Scientists believe 3I/ATLAS contains significant amounts of carbon dioxide, similar to comets formed in cold, distant star ...

Comet 3I/ATLAS was first detected on July 1, 2025 by the Asteroid Terrestrial-Impact Last Alert System (ATLAS). As it approached the Sun, it displayed a subtle non-gravitational acceleration, ...

An incredibly rare astronomical phenomenon is taking place in our sky right now, you just can't see it - yet.

Skywatchers could see up to 10 brilliant meteors every hour as Earth passes through debris from Comet Encke, although ...

Comet 3I/ATLAS isn’t hiding from view; it has been coming from behind the Sun, making it hard for ground-based telescopes to track. That’s why we haven’t seen much of it yet. So no, this doesn’t mean ...

Rep. Aaron Bean voiced frustration as Democrats demanded an extension of subsidies for Affordable Care Act-obtained insurance ...

A Harvard astrophysicist who believes the Manhattan-sized comet hurtling towards Earth could possibly be fueled by alien ...

Usually, sunlight makes cometary gases glow green from diatomic carbon (C2) or blue from ionized carbon monoxide (CO+). With ...

Atlas fuels debate as NASA delays new images. See what data exist, why releases lag, what scientists say, and what to watch next.

Behind the Sun, the comet appears to show signs of acceleration beyond what is expected by gravity. And for reasons not yet ...