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Artist's impression of the Chandra X-ray Observatory

Astronomers are rallying to save NASA’s Chandra X-ray Observatory

micrometeorites

Science, Solar System

Thinking small: Uncovering the secrets of micrometeorites

How is TESS able to spot more planets in the sky than Kepler could?

My first image of the Lagoon Nebula (M8) was effectively zoomed in so far that the object looked nothing like a lagoon. It was taken with a Nikon D3100 on my Celestron 8-inch SCT, with an exposure time of 30 seconds at ISO 3200.

Astrophotography, Observing Basics

How to choose the right focal length for your astrophotos

Science, Solar System

India’s lunar rover found remnants of the Moon’s ancient global magma ocean

The International Space Station

Human Spaceflight, Space Exploration

Here’s how NASA will deorbit the International Space Station

Artist's illustration of humans working on Mars.

Human Spaceflight, Space Exploration

Opinion: How we can explore space without repeating colonialism’s mistakes

Observing, Science

Where did the constellations come from?

No matter how many Full Moons appear in any given timespan, its color will not actually change to blue. Credit: John Chumack.

Observing, The Moon

What is a Blue Moon? When’s the next one?

An artist's depiction of NEOWISE overlays the first asteroid image the mission took.

Robotic Spaceflight

NASA bids farewell to NEOWISE mission

JWST IR view of Jupiter

Cosmology, Solar System

Scientists use Jupiter to search for dark matter

This 1874 lithograph was created by Étienne Léopold Trouvelot with the 15-inch refractor at the Harvard College Observatory, for the purpose of measuring the nebula’s extent. A glass plate with dark black lines was placed on the focus of the telescope for marking placement. No wonder it shows no central star.

Looking inside the Ring Nebula