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NASA’s SPHEREx Telescope Sees Menagerie of Brown Dwarfs
5 min read

NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer) space telescope is shedding light…

Oct 8, 2026
Article
NASA’s Webb Reveals Dynamic Panorama of Star Formation
5 min read

This starry view of the nearby star-forming region IC 348 is one of the largest images released to date from…

Sep 15, 2026
Article
IC 348 Collage
1 min read

This collage features a collection of insets from NASA’s James Webb Space Telescope’s image of star-forming region IC 348: embedded…

Sep 15, 2026
Image
Search for Hidden Cosmic Companions in Sun’s Backyard
2 min read

Some stars have planets. Others are orbited by brown dwarfs, balls of gas too massive to be planets, but too…

Jun 17, 2026
Article
NASA Study: Celestial ‘Accident’ Sheds Light on Jupiter, Saturn Riddle
6 min read

An unusual cosmic object is helping scientists better understand the chemistry hidden deep in Jupiter and Saturn’s atmospheres — and…

Sep 9, 2025
Article
3 Years of Science: 10 Cosmic Surprises from NASA’s Webb Telescope
11 min read

Since July 2022, NASA’s James Webb Space Telescope has been unwaveringly focused on our universe. With its unprecedented power to…

Jul 2, 2025
Article
Discovery Alert: A Possible Perpendicular Planet
3 min read

The Discovery A newly discovered planetary system, informally known as 2M1510, is among the strangest ever found. An apparent planet…

May 21, 2025
Article
Flame Nebula: Hubble and Webb Observations
1 min read

This collage of images from the Flame Nebula shows a near-infrared light view from NASA’s Hubble Space Telescope on the…

Mar 10, 2025
Image
Low Mass Objects within the Flame Nebula (NIRCam Image)
1 min read

This near-infrared image of a portion of the Flame Nebula from NASA’s James Webb Space Telescope highlights three low-mass objects,…

Mar 10, 2025
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Article
5 Min Read

NASA’s Webb Reveals Dynamic Panorama of Star Formation

Article
2 Min Read

Search for Hidden Cosmic Companions in Sun’s Backyard

Article
11 Min Read

3 Years of Science: 10 Cosmic Surprises from NASA’s Webb Telescope

Article
3 Min Read

Discovery Alert: A Possible Perpendicular Planet

Multimedia

This illustration shows brown dwarfs are more massive than planets but not quite as massive as stars.
The faster a brown dwarf spins, the narrower the different-colored atmospheric bands on it likely become, as shown in this illustration.
By using NASA's Spitzer Space Telescope, astronomers have found that the varying glow of brown dwarfs over time can be explained by bands of patchy clouds rotating at different speeds, as shown in this artist's concept.
This graph shows the brightness variations of the brown dwarf named 2MASSJ22282889-431026 measured simultaneously by both NASA Hubble and Spitzer space telescopes.
Two space-based telescopes, NASA's Spitzer and Swift, teamed up with ground-based observatories to observe a microlensing event caused by a brown dwarf.
This artist's concept shows a brown dwarf, an object that is at least 13 times the mass of Jupiter but not massive enough to begin nuclear fusion in its core, which is the defining characteristic of a star.
This artist illustration shows the atmosphere of a brown dwarf called 2MASSJ22282889-431026, which was observed simultaneously by NASA Spitzer and Hubble space telescopes. The results were unexpected, revealing offset layers of material.
This artist conception based on data from NASA Wide-field Infrared Survey Explorer illustrates what brown dwarfs of different types might look like to a hypothetical interstellar traveler who has flown a spaceship to each one.
A young, free-floating world sits alone in space in this illustration. The object, called WISEA J114724.10-204021.3, is thought to be an exceptionally low-mass brown dwarf.
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Many glowing stars, some especially bright with small chunks of white dust, with hazy blue gas and clumps of dark red-black dust.