#Astronomy13
Clouds form each morning on WASP-94A b
Scientists using the James Webb Space Telescope found a daily cloud cycle on the Hot Jupiter WASP-94A b: sand-like clouds appear each morning and clear by evening. The finding helps measure the planet’s atmosphere more accurately.
Photo by Billy Huynh, Unsplash
Decaying dark matter may explain early giant black holes
Researchers propose that tiny energy from decaying dark matter changed gas chemistry in the first galaxies. This could let some gas clouds collapse directly into massive black holes, helping to explain early observations by the James Webb Space Telescope.
Astronomers find evidence of two planets colliding
A team found rare signs that two planets collided around a distant star named Gaia20ehk. Rocks and hot dust blocked visible light while infrared light rose, and researchers say the debris likely came from a catastrophic planetary impact.
Astronomers image two collisions at Fomalhaut
Astronomers imaged the dusty aftermath of two collisions between large bodies around the nearby young star Fomalhaut, the first such images beyond the solar system. Teams will track the expanding dust with Hubble and the James Webb Space Telescope.
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.
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.