Just how far can we see on a clear, dark night? If you’re a regular reader of this column, you know that the stars overhead lie many trillions of miles ...
The Andromeda galaxy (M31) has been captured by the Chandra X-ray Telescope. See the imagery and hear a sonification of it.
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Double comet alert! Comets Lemmon and SWAN will reach their brightest this week — here's how to spot them
Comet Lemmon (C/2025 A6) makes its closest approach to Earth on Oct. 21, about 24 hours after the fainter Comet SWAN (C/2025 ...
One of the classic constellations of the night sky is Pegasus, the flying horse. The heavenly horsey is currently soaring in ...
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