Theia, the planet at the origin of the Moon, may have formed close to the Sun
If the Moon is the natural satellite of the Earth, this has not always been the case. Indeed,…
Astronomers uncover Earth-sized planets in a compact binary system
When the Transiting Exoplanet Survey Satellite (TESS) scanned a faint red-dwarf pair in 2019, astronomers noticed periodic dips…
A Soft Collision in the Early Solar System May Explain Mercury’s Giant Metal Heart
In the crowded early Solar System, young planets frequently collided and reshaped each other. But Mercury stood out.…
Turns Out Cosmic Dust Isn’t Actually Miniature Rocks After All
Featured in this image from the NASA/ESA Hubble Space Telescope is a lenticular galaxy called NGC 4753 with…