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Massive comet zooming through solar system could be alien technology, Harvard astrophysicist says
Harvard researcher Avi Loeb says comet 3I/ATLAS weighs 33 billion tons and spans 3.1 miles, making it far larger than previous interstellar visitors.
The methane gas may constitute a rarefied atmosphere, or it may come from erupting plumes on Makemake’s surface.
Smithsonian Magazine on MSN
‘Ultimate Cosmic Carpool’ Sends Three New Missions to Monitor Space Weather and the Protective Bubble Around Our Solar System
The spacecraft will map the boundaries of the heliosphere, study how Earth’s outer atmosphere reacts to solar activity and ...
Asteroid ‘Families’ Reveal Hidden Histories and Impact Risks across the Solar System ...
The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get ...
Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...
Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.
The findings suggest Earth’s geological story was partly written in the stars – specifically, in the spiral arms of our home ...
Opinion
The moon is getting slightly farther away from the Earth each year — a physicist explains why
Scientists measure the distance to the Moon by bouncing lasers off mirrors placed there by space probes and astronauts.
The official number of exoplanets—planets outside our solar system—tracked by NASA has reached 6,000. Confirmed planets are ...
A new study warns of an undiscovered population of asteroids that could strike Earth with little to no warning.
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