Scientists observed a strange planet that orbits a pulsar, a rapidly spinning dead star that emits high-energy beams. Webb’s infrared instruments can see the planet because those beams are invisible in infrared light.
The planet’s atmosphere is dominated by helium and carbon and it carries soot clouds. The team found signs of molecular carbon, and under high pressure carbon may condense into diamonds. The planet orbits very close to its star and completes an orbit in about eight hours. Researchers say more observations and modelling are needed to explain how the planet formed.
Difficult words
- pulsar — a dead star that spins very fast
- infrared — light with longer wavelengths than visible light
- atmosphere — layer of gases around a planet or star
- soot — black powder made from burned material
- condense — change from gas to liquid or solid
- orbit — to move around a larger object in spaceorbits
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Related articles
New isotope evidence on the Moon’s origin
A new study finds that the object that hit early Earth and formed the Moon—called Theia—likely formed closer to the Sun. Researchers used isotopes from Earth rocks, Apollo samples and meteorites to reach this conclusion.
Study: Many small galaxies may lack central black holes
A University of Michigan-led study using Chandra X-ray data finds many dwarf galaxies do not show signs of central supermassive black holes. The result suggests the biggest black holes may have formed large early and could be tested by future missions.
New images reveal complex nova eruptions
Astronomers used interferometry at the CHARA Array to take direct images of two novae soon after they erupted. The pictures show multiple outflows and, in one case, a delayed release of material.
Study: Many mini‑Neptunes may have solid surfaces
A University of Chicago study using JWST data and computer models finds many mini‑Neptunes might have solid surfaces instead of global magma oceans, because heavy atmospheres can create extreme pressure at the surface.
Searching for Life on Exoplanets
Since a 1995 discovery, astronomers have found over 4,000 exoplanets. Scientists study biosignatures and technosignatures to learn if life or technology exists elsewhere. A NASA grant supports Adam Frank's work on technosignatures.
New models rethink the insides of Uranus and Neptune
A University of Zurich team created new interior models for Uranus and Neptune. The work shows the planets could be rock-rich or water-rich, helps explain their odd magnetic fields, and says we need dedicated missions to learn more.