Mercury is the innermost and smallest of the eight major planets in our Solar System, orbiting closest to the Sun. Though ...
Beginning Nov. 25, 2025, Mercury will be far enough west to peek above the horizon just before sunrise. Venus will also be naked-eye-visible as a bright point of light but you’ll want a telescope or a ...
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The Sky Today on Tuesday, October 21: The Orionids peak, Comet Lemmon is closest to Earth, and Titan makes a transit
Looking for a sky event this week? Check out our full Sky This Week column. October 20: Visit the Pleiades Today is a busy day! Mercury passes 2° south of Mars at 2 A.M. EDT - we'll observe the pair ...
In the distant past, the solar system was rife with impacts and collisions. Millions of rocky objects zoomed chaotically through the system, smashing into each other in collisional cascades. Over time ...
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