For several days this month, Saturn, Mars, and Mercury appear just degrees apart before sunrise—close enough to watch their ...

Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...

Despite hurtling through space at incredible speeds, we don't feel the Earth's motion because it's constant and shared. Like passengers on a plane, we move with our surroundings. Gravity anchors us, ...

We often use the Earth's 24-hour rhythm to keep track of time, but time changes and bends as we move through space. There are eight planets in the solar system, and they all move in a delicate cosmic ...

The closest planet to our sun, Mercury, experiences extreme temperature variations. Since the planet has no atmosphere to ...

As the number of exoplanet detections has breached 6,000 and continues to grow, scientists are finding a wide variety of different solar system architectures. Critical to understanding how these ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

NASA captures the first X-ray image of a star similar to a young Sun, HD 61005, blowing a gas bubble like nothing ever seen ...

The JWST discovers an impossible anomaly on TOI-5205 b and challenges everything we thought we knew about giant planets.

Understanding your Neptune sign can reveal the dreams and ideals shaping your imagination and the generation you were born ...

Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.

The Artemis II crew flew farther from Earth than any humans in history as they passed over the far side of the moon on Monday ...