When a hunk of ice from another star system hurtles through our cosmic neighborhood, astronomers pay attention. When that same hunk of ice starts blasting out enough water to fill 70 Olympic swimming ...

Australians will have their only chance to spy a newly discovered blue-green comet scorching past Earth during the next ...

A comet from another star system is carrying water unlike anything astronomers have ever measured in our cosmic neighborhood.

The Subaru Telescope achieved first light in January 1999 and entered its 27th year of operation in 2026. In March 2025, ...

A rare interstellar comet, C/2025 R3 (Pan-STARRS), is traversing our solar system, offering a unique opportunity for skywatchers to observe it. Binoculars can enhance the experience.

STARRS, also known as comet C/2025 R3 (Pan-STARRS), is visible before sunrise until this weekend. Here’s how, when and where to find it on Friday, April 17.

Imagine a visitor from beyond our cosmic neighborhood. Not just from the next street over, but from an entirely different star system, a place we can only dream of reaching. These ancient wanderers, ...

3I/ATLAS is now sailing away from Earth and our solar system itself, but astronomers have already learned a wealth of ...

- Lagoon Nebula (M8) is an emission nebula in Sagittarius.

The presence of deuterium, an isotope of hydrogen, in 3I/ATLAS suggests the interstellar comet formed in a much colder place ...