Stephan's Quintet, discovered in 1877 by French astronomer Edouard Stephan in the constellation Pegasus, exemplifies the enhanced detail observable through larger astronomical apertures. The group ...

At least two ingredients are needed to make jets — rotation and magnetic fields — and these produce the ubiquitous laserlike jets we see.

A Full Moon occurs when the Earth is between the Sun and the Moon. The Moon's orbit creates different phases, including a Full Moon. Full Moons have traditional names, like the Sturgeon Moon. The 2025 ...

Several planets, including Mercury, Mars, Venus, Uranus, Neptune, Saturn, and Jupiter, are visible this month. Saturn's moon Titan will cast its shadow on Saturn twice during July. Neptune will be ...

The world’s best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each issue includes expert science reporting, vivid color ...

Vera Rubin's observations of galaxy rotation defied Newton's laws. This unexpected rotation provided the first direct evidence of dark matter. Dark matter makes up about 84% of the universe's matter.

The Artemis program aims to return humans to the Moon using multiple vehicles from NASA and private companies like SpaceX and Blue Origin, contrasting with the Apollo program's single-rocket approach.

Karl Schwarzschild's 1916 solution to Einstein's field equations of general relativity predicted the existence of black holes, characterized by an event horizon where even light cannot escape. Cygnus ...

Islamic scholars significantly advanced astronomy between 800 and 1300 AD. They made precise astronomical calculations using advanced math. Their work included building observatories and inventing new ...

The aurora borealis, or Northern Lights, is caused by solar wind particles colliding with Earth's atmosphere. Ancient Chinese texts describe a five-colored aurora event dating back to around 977 or ...

The universe's geometry can be classified as flat, closed (positive curvature), or open (negative curvature), determined by its density and expansion rate. Current cosmological models, primarily the ...

Telescopes primarily collect light to see faint objects. Most beginner telescopes are sold complete, ready to use. Larger telescopes gather more light, allowing observation of fainter objects.