The brief, bright appearance of Comet C/2025 A6 (Lemmon) is rapidly drawing to a close, giving stargazers a final, narrow ...

The icy visitor, which reached its closest point on October 21, is currently situated more than 63.3 million miles from Earth ...

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete more of their gas and dust. Consequently, they don’t typically emit as much ...

While the Orionids aren’t the most prolific meteor shower of the year, they are incredibly fast movers. They enter the atmosphere at about 41 miles per second (about 150,000 miles per hour), heating ...

Halloween is upon us and the 2025 spooky season is abuzz with talk of three cosmic visitors — Comet Lemmon, Comet SWAN and the interstellar traveler 3I ATLAS — said to be haunting the night sky. But ...

Several planets, including Mercury, Mars, Venus, Uranus, Neptune, Saturn, and Jupiter, are visible this month. Saturn's moon Titan will cast its shadow on Saturn twice during July. Neptune will be ...

Astronomers have detected a gigantic comet — possibly the largest ever discovered — and it’s spewing gases from its nucleus as it shoots through our cosmic neighborhood. “These measurements give us a ...

Full Supermoon . See the biggest and brightest moon of the year—the full supermoon—on the evening of Nov. 5. The moon will officially reach its fullest state at 8:19 a ...

The comet Tempel 1 (shown) was also studied this decade, though Wild 2 is the first comet whose particles were analyzed on Earth. Science After a thorough analysis of particles collected from a comet ...