The equatorial coordinate system projects Earth's latitude and longitude onto the celestial sphere, using declination (angular distance from the celestial equator, measured in degrees) and right ...
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Comet C/2025 R2 (SWAN) can still be spotted from the Earth—viewing tips and its likely coordinates
While Comet C/2025 R2 (SWAN) made its closest pass to Earth on October 20, 2025, at a distance of approximately 39.1 million kilometers (0.26 AU), it remains a visible, albeit challenging, target for ...
Skywatchers looking toward the constellation Virgo this week have a notable target: Interstellar comet 3I/ATLAS. The icy visitor, which has been the subject of global discussion for the past few weeks ...
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