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Moonlight and Our Atmosphere
The Moon’s light is refracted by Earth’s atmosphere, giving it a spheroid shape in this April 13, 2025, photograph from the International Space Station as it orbited into a sunset 264 miles above the border between Bolivia and Brazil in…
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A new dwarf planet may skirt the edge of our solar system
A possible cousin of Pluto seems to be circling the far reaches of the solar system. Known as 2017 OF201, it’s a suspected dwarf planet — a round rock too big to be an asteroid but too small to be a full-fledged…
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Artemis II Crew Practices Night Launch Scenario
NASA astronauts Christina Koch, Artemis II mission specialist, and Victor Glover, Artemis II pilot, walk on the crew access arm of the mobile launcher in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Tuesday, Aug. 12,…
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Scientists Say: Steppe
Steppe (noun, “STEP”) A steppe is a flat, dry grassland. These grassy plains occur in temperate regions with a dry climate. Steppes contain mostly grasses — often short — and shrubs. Because of the dry conditions, few trees can grow…
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NASA-Developed Printable Metal Can Take the Heat
3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) GRX-810 is a new metal alloy developed by NASA for 3D printing parts that can withstand the extreme temperatures of rocket engines, allowing affordable printing of high-heat parts. NASA…
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Spacewalk Pop-Up
Former NASA astronaut Shane Kimbrough is photographed during a spacewalk in January 2017.
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Say Cheese!
Eleven International Space Station crew members gather inside the International Space Station’s Unity module for a portrait on Aug. 3, 2025.
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This device creates rainbows of sound
No rainstorm is needed for this new type of rainbow — it’s made of sounds. A normal rainbow separates light waves of different hues, or wavelengths. The different colors that make up sunlight fan out to appear side-by-side in the…
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Alligator Goes for a Swim
An alligator moves through a brackish waterway at NASA’s Kennedy Space Center in Florida. The center shares space with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, 25 mammals, 117 fishes and 65 amphibians…
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Alligator Goes for a Swim
An alligator moves through a brackish waterway at NASA’s Kennedy Space Center in Florida. The center shares space with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, 25 mammals, 117 fishes and 65 amphibians…