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.
Discussion questions
- Do you think scientists should do more observations of this planet? Why or why not?
- Are you surprised that carbon may become diamonds under pressure? Explain briefly.
- Would you like to learn more about planets around dead stars? Why?
Related articles
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 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.
