NASA lander makes first direct observations of another planet’s core
The InSight lander was sent to Mars to study the planet’s interior, mostly by way of marsquakes
Scientists discover closest star-shredding black hole to Earth ever seen
Astronomers comparing maps of the universe uncovered the nearest example of a black hole devouring a star ever detected
A Russian “inspector” satellite appears to be chasing a secret US military satellite in a game of cat & mouse
The behavior of Kosmos-2558, and the lack of a formal explanation from Russia, has led space observers to believe that the probe is stalking USA-326