Artemis III is planned for 2027. If it stays on schedule, it will be the mission that puts humans back on the moon for the first time in 55 years. The crew plans to touch down in one of 13 planned ...
See the crescent moon shine with Mars at sunset on Sept. 24. The crescent moon shines close to Mars above the western horizon ...
Astronomy on MSN
Sept. 23, 1846: Johann Galle discovers Neptune
For decades following the discovery of Uranus in 1781, astronomers were puzzled by the irregularities in the planet's orbit.
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