NASA astronaut Don Pettit used a camera with low light and long duration settings to capture this Jan. 29, 2025, image of the Milky Way appearing beyond Earth's horizon.

The shot of our planet and the great cosmos beyond offers an eerie sense of scale to our quotidian situations on Earth.

This stunning photo was taken on January 29, 2025, from 265 miles (425 km) above the Pacific Ocean. Pettit, a seasoned ...

When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

Unlike the typical blue-and-green depiction of Earth, this photo shows the planet in a mossy green hue, framed by a thin ...

Lior Shamir, a computer scientist in the Carl R. Ice College of Engineering at Kansas State University, published a study of ...

Voluminous clouds of cosmic dust permeate our galaxy, but only recently has software allowed detailed observations of the ...

A NASA telescope was launched into space from California on Tuesday for a mission to explore the origins of the universe and ...

These glass plates recorded images of the night sky using a light ... His measurements marked the end of the Great Debate about the Milky Way’s size and the nature of the nebulae.

A new study suggests that dark matter could be shaping cosmic chemistry, with a proposed self-annihilating dark matter ...

Since its launch a little over three years ago, NASA’s James Webb Space Telescope has revolutionized our understanding of the ...