This spring, skywatchers have been treated to the captivating and unpredictable display of a new comet, called C/2025 F2 ...

An emerald-colored comet discovered at the start of the month has just "erupted" as it continues to race toward the inner solar system, before eventually slingshotting around the sun. The icy ...

The emerald hue is caused by diatomic carbon, a clear sign that the comet’s coma (the fuzzy atmosphere of the comet) is richer in gas than in dust. You can check the position of Comet C/2025 F2 ...

A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and ...

The emerald hue is caused by diatomic carbon, a clear sign that the comet’s coma (the fuzzy atmosphere of the comet) is richer in gas than in dust. You can check the position of Comet C/2025 F2 ...

The mission’s primary science goal is to characterise, for the first time, a dynamically new (long-periodic) comet or interstellar object, including its surface composition, shape, and structure, and ...

This morning, Comet SWAN is just 2° southwest of this ... SWAN requires binoculars or a small telescope to see. Its glowing green coma and long tail stand out well in astrophotos, and its ...