A recent study suggests a plausible mechanism to explain why observers sometimes hear superbright meteors at the same time that they see them.
The star with seven exoplanets puts out enough high-energy radiation to tear away the inner planets’ atmospheres in a few billion years.
The bright Moon hangs a few degrees below or lower left of Regulus this evening, and late tonight comes the second-brightest asteroid occultation predicted this year for North America.
Obsolete constellations may be gone, but they’re not forgotten. We revisit their brief glories and learn how to find them in the 21st-century sky.
In this month’s easy-to-download podcast, find out how you can glimpse Venus in both the evening and predawn skies.
A solar eclipse provided the perfect teachable moment in Angola, as students learned about the real sizes and distances of Earth, the Moon, and the Sun.
A Remarkable View of Aldebaran’s Occultation
A lucky group of Canadian observers got to witness remarkable events as the Moon slid past Aldebaran on the night of March 4th.
Still active today, the Association of Lunar & Planetary Observers and its journal got their start on March 1, 1947.