The conflict between the brain's expectation of Earth's gravity and the reality of no gravity causes space motion sickness.

The ESCAPADE mission, short for Escape and Plasma Acceleration and Dynamics Explorers, is the first dual-satellite mission to ...

This session of king tides will conclude Nov. 7, but winter provides two more opportunities to witness the powerful waves.

Astronomers have discovered that aging stars may be devouring their closest giant planets as they swell into red giants.

According to the latest mathematical models, the moon has a fluid outer core and a solid inner core, similar to Earth’s. The ...

What would a human see and feel while falling into a black hole? In this exclusive excerpt of his new book, "Facing Infinity, ...

You may want to look up on Tuesday and Wednesday nights to catch a special sight in the sky: a supermoon, the closest of the ...

Photos and videos of astronauts on the ISS show them floating around, but saying there's zero gravity isn't fully accurate.

Jupiter’s immense size and gravity would make humans 11 times heavier, tear apart our Moon into rings and pull asteroids ...

It’s been called a moonlet. Sister moon. You could even call it a moon “buddy,” a companion or quasi-satellite, if you will, to our steady lunar neighbor. Astronomers say a tiny asteroid, called 2025 ...

Astronomers have discovered a new quasi-moon. 2025 PN7 is not the first quasi-moon, nor the only out there right now. Has Earth acquired a second moon? Not exactly. Astronomers recently discovered a ...

JACKSONVILLE, Fla. — You may have heard claims that NASA scientists confirmed the Earth has a second moon, but that statement isn't totally true. NASA did confirm there is a newly discovered ...