On Dec. 23, 1672, Italian astronomer Giovanni Cassini discovered Rhea, Saturn’s second-largest moon. Rhea is made up of rock ...

The analysis concluded that the decay heat from these radioactive elements could support the life activities of more than ...

This is Wednesday, Dec. 24, the 358th day of 2025 with seven to follow. The moon is waxing. Morning stars are Jupiter, ...

On Christmas Eve 1968, Apollo 8 crewmembers Frank Borman, Jim Lovell, and Bill Anders made a live broadcast from orbit around the Moon.

NASA’s Curiosity rover will go dark for a few weeks due to a conjunction between Earth and Mars, blocking communication between the two planets.

SpaceX reportedly informed the FAA about the mishap after the agency had already activated debris response areas.

Researchers are exploring whether the spider-like feature in Europa’s Manannán crater was formed in a similar manner to Earth’s lake stars.

Astronomers discovered a new moon of Uranus and hundreds of moons around Saturn over the past year, and there may be many ...

Northeast a reason to look up and marvel after sunset.Sunset is expected around 4:30 p.m. Eastern time on Wednesday. As the ...

Comet 3I/ATLAS was discovered on July 1, 2025, by the NASA-funded ATLAS telescope in Rio Hurtado, Chile and was quickly ...

The three bright stars of the Winter Triangle form an equilateral triangle visible in the evening sky during our northern ...

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