The vernal equinox occurs at 10:46 A.M. EDT, bringing astronomical spring to the Northern Hemisphere as the Sun stands directly over Earth’s equator. On this day, the Sun also sits at the celestial ...
The bestselling author discusses his inspiration, creative process, and favorite scientific tidbits behind the feature film.
The Sun, along with more than 1,500 other stars, journeyed from the middle of the Milky Way to its current position a few billion years ago.
Look north this evening a couple hours after sunset and you’ll easily spot the large shape of the Big Dipper as it sits upside-down in the sky, appearing to pour from its cup into that of the smaller ...
Sixty-five years ago, the USSR shocked the world by sending the first robotic emissary from Earth to the Moon. The September 1959 impact of Luna 2 on northeastern Mare Imbrium was a stunning ...
Io transits Jupiter’s broad disk late tonight, beginning at midnight EST. On the East Coast, Jupiter is still 40° high in the west at local midnight, readily visible as the brightest point of light in ...
The Galilean moon Callisto disappears behind Jupiter in an occultation early this morning. The catch is that the event is only visible from the western half of the U.S., but observers farther east can ...
One of the most enduring mysteries in astronomy may have just been solved — and sorry folks, it’s not aliens. In a paper posted last month to the arXiv preprint server, a team of astronomers report ...
In 2018, NASA’s OSIRIS-REx mission reached asteroid 101955 Bennu. Two years later, the spacecraft snagged a sample of its surface, which has since been returned to Earth. Now, astronomers are getting ...
On Oct. 10, 1846, William Lassell peered through his 20-foot reflector in Liverpool, England. Lassell was a self-funded amateur astronomer who had made a fortune as a brewer, and he’d built his own ...
From Mars, Earth transits the Sun four times in a 284-year cycle. The transits occur in either May or November at intervals of 100.5, 79, 25.5, and 79 years. During these events, Earth and the Moon ...
In March of 1989, a highly active sunspot region released multiple extreme solar flares, including an X4.5 flare on March 10 and a M7.3 flare on March 12. Solar flares are ranked as B, C, M, and X ...
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