Super-puff exoplanets containing more than 10 times Earth’s mass could feasibly have formed with the large gaseous envelopes they have today, although they could have also been inflated by tidal circularization.
New simulations show that when the first stars in the universe are disrupted by black holes, the signals from these events should be distinguishable from tidal disruption events in the local universe.
Martian soil simulant, a vacuum chamber, a centrifuge, and a halogen lamp come together to create a laboratory simulation of dust grains sliding down inclined surfaces on Mars.
Using simulations, researchers show how jets from a spinning, accreting supermassive black hole can fizzle out, potentially explaining galaxies without radio emission past a certain radius.
New images from the Hubble Space Telescope confirm the identity of a star that went supernova and allow researchers to study the star’s pre-explosion outburst.
From 2017 to 2023, researchers monitored the X-ray outbursts of a particular pulsar; among other findings, the data suggest three different accretion modes for the source.