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Science, Solar System

Fossil evidence casts doubt on Younger Dryas impact theory

‘Ring of fire’ annular eclipse wows Sun-gazers across the Americas

E: Time’s Telescope was an almanac published in London from 1814 to 1834.

The history of astronomical almanacs

Oleg Kononenko floats through the Destiny laboratory of the International Space Station in 2008. Credit: NASA.

Human Spaceflight, Space Exploration

Oleg Kononenko reaches a record-setting 1,000 days in space

A page from the Dresden Codex.

Solar eclipse warnings persist, from ancient Maya to today

Thomas Stafford's 1966 NASA portrait. Credit NASA

Human Spaceflight, Space Exploration

Remembering Tom Stafford, the Apollo commander who did his part to thaw the Cold War

2024 Solar Eclipse, Observing, Science, Upcoming events

How to see the next 20 years of eclipses, including the eclipse of a lifetime

The Moon’s shadow falls on Green River Lakes, Wyoming, during the Aug. 21, 2017, solar eclipse in this composite image.

2024 Solar Eclipse

How to view the 2024 eclipse, a step-by-step planning guide

Clementine observes the Moon, solar corona, and Venus in 1994. In this picture the Moon is seen illuminated solely by light reflected from the Earth — Earthshine! The bright glow on the lunar horizon is caused by light from the solar corona; the sun is just behind the lunar limb. Caught in this image is the planet Venus at the top of the frame. Credit: NASA

Robotic Spaceflight, Science, Space Exploration

30 years ago, Clementine changed how we think about the Moon

Eclipse glasses from Astronomy.

2024 Solar Eclipse, Observing, Science, The Sun, Upcoming events

The best equipment to see the 2024 eclipse

The Sky This Week from April 26 to May 5

Asteroid Chariklo found to have two rings