Astronomy

Latest about Astronomy

What is the moon phase today? Lunar phases 2025

By Tariq Malik, Daisy Dobrijevic last updated

Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.

Reference
Visualization showing how charged particles stream onto the poles of the Earth creating the northern and southern lights as seen in the new PBS documentary Earth from Space by NOVA.

Flat Earth, spirits and conspiracy theories — experience can shape even extraordinary beliefs

By Eli Elster published

Why do people often adopt and develop beliefs that lack strong supporting evidence?

Earth
A photograph of the tip of Florida and nearby Cuba from space, with lights from cities illuminating the surface of the planet, labeled cities like Orlando and Tampa are seen as well as a green surface over Earth's labeled airglow

ISS astronaut snaps stunning nighttime photo of Florida and Cuba | Space photo of the day for Dec. 29, 2025

By Kenna Hughes-Castleberry published

The image offers a rare look at how Earth's surface and atmosphere interact after sunset.

Earth
An artist's concept of two black holes circling each other before merging. For the first time in history, scientists have directly observed a black hole merger, using the Laser Interferometer Gravitational Wave Observatory (LIGO).

Event horizon hunt: A black hole word search

By Kenna Hughes-Castleberry published

Hunt for key terms that define one of the universe's most mind-bending phenomena—from event horizons to singularities.

Black Holes
A closeup of "leopard spots" on Mars seen by the Perseverance rover.

8 astronomy discoveries that wowed us in 2025

By Keith Cooper published

Here are eight of the most spectacular astronomical discoveries of 2025.

Astronomy
A black and white crossword puzzle sits underneath a blue and white coffee cup with the Space.com black and white logo in the bottom left corner.

Space.com headlines crossword quiz for week of Dec. 22, 2025: Which NASA observatory just completed its first sky map?

By Kenna Hughes-Castleberry published

Test your space smarts with our weekly crossword challenge, crafted from Space.com's biggest headlines.

Astronomy
A bright ball of light shoots red and purple and white sparks in front of a galaxy background with stars, purple, and blue colors on it

Dark matter may be made of pieces of giant, exotic objects — and astronomers think they know how to look for them

By Paul Sutter published

Searches for dark matter particles have come up empty so far, driving theorists to get more creative with their ideas.

Dark Universe
An illustration of concentrated dark matter at the heart of a spiral galaxy

Most normal matter in the universe isn't found in planets, stars or galaxies – an astronomer explains where it's distributed

By Chris Impey published

While space is often referred to as a vacuum, it isn't completely empty.

Astronomy
An artist's illustration of the various exoplanets found, with rows of colorful planets of all colors and sizes over a dark background

The most exciting exoplanet discoveries of 2025

By Sharmila Kuthunur published

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown.

Exoplanets
A painted portrait shows a man with a white beard and balding head looking at the camera while wearing a white collar and black shirt

Ancient eyes on the skies: Early astronomers quiz

By Kenna Hughes-Castleberry published

Long before modern telescopes, early astronomers mapped the heavens with math, myth, and sheer curiosity. This crossword quiz celebrates the minds who first charted the cosmos.

Astronomy
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