The Oort Cloud is a theorized invisible spherical shell that surrounds the Sun.

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this weekend, on Friday, Oct. 18, ...

How, when, and where to look to see Comet C/2023 A3 (Tsuchinshan-ATLAS) after sunset this Friday, Oct. 18, with sky charts, ...

U.S. health officials say whooping cough is at its highest level in a decade for this time of year. The Centers for Disease ...

Comet Tsuchinshan-ATLAS (also known as C/2023 A3 and Comet A3) will be visible for the next few nights, and we only need to ...

The Virtual Telescope Project's livestream of the full Hunter's Moon supermoon and comet Tsuchinshan-ATLAS was postponed due ...

The Hunter's Moon of October 2024 will be the largest full moon of the year thanks to its proximity to Earth. The moon ...

If you’ve missed a glimpse of the bright comet streaking through the evening sky, it’s not too late to catch it again.

Tsuchinshan-ATLAS (C/2023 A3) | When was it first seen?

Quality planetarium software is essential to planning observations, especially for comets. Many software packages are ...

Europa Clipper will make a six-year journey to Jupiter to study Europa, an icy-surfaced moon that scientists believe has ...