Starspots and Superflares

Astronomers use transiting exoplanets to detect starspots hundreds of light-years away and study the connection between these surface features and energetic stellar flares.

cooled black lava is crossed by bright cracks showing hotter lava below. gas billows from multiple bright areas.

Modeling Magma Ocean Exoplanets

Where do exoplanets keep their water? A new study explores how water-rich magma oceans affect the properties of distant planets.


How To Jump-Start a Supermassive Black Hole

Astrobites reports on some of the brightest objects in the universe: active galactic nuclei. What is responsible for switching on these supermassive engines?

a solar filament at optical and ultraviolet wavelengths, as well as the filament's Doppler shift

Astronomers examine a tightly coiled rope of plasma as it moves on the solar surface.

A volcanic eruption appears on the limb of Jupiter's moon Io

Astronomers have probed the volcanoes of Io at higher resolution than ever before, and their discoveries could help solve the mysteries of this dynamic world.

x-ray image of the Milky Way center, featuring bright emission at the center and two lobes of gas to either side,

Astrobites gives us a preview of what future generations of giant telescopes might see when pointed toward the supermassive black hole at the center of the Milky Way.

intricate tendrils and clumps of gas and dust stretch across a star-forming region dotted with young stars

Astronomers are still trying to understand how stars form from molecular clouds hundreds of light-years across. What can we learn from one of the largest star-forming regions in the Milky Way?

hundreds of densely packed glowing stars with some faint nebulosity

Gravitational-wave “kicks” might eject black holes from star clusters, preventing them from forming even more massive black holes.

gas-giant formation

A Young Star’s Disk Dilemma

Astronomers think CI Tauri hosts a massive planet, but observations of its disk don’t give any sign of one. What’s really going on around this star?