This inside-out planetary system has astronomers scratching their heads
A rocky exoplanet in the LHS 1903 system defies planet formation models, hinting that gravitational upheaval reshaped the red dwarf’s four worlds.
Author: Adam Mann
A Greek star catalog from the dawn of astronomy, revealed
Researchers are using X-rays to discover invisible markings left on ancient parchment containing information from the Greek astronomer Hipparchus.