How was the closest supernova remnant to the galactic core created? Sgr A East is young, mysterious and could even tells the story of its origin. Perhaps we’ve already observed the stellar corpse left behind by the explosion which created the remnant.
How to look into the interiors of asteroids? Tidal interactions during close encounters with Earth might just work!
Not that long ago, in a system not too far away, a free-floating planet pays a visit… to HD 106906, a binary star system with an exoplanet and a debris disk!
(22) Kalliope and its large moon Linus were thought to be traveling through the solar system as a lone pair with no further asteroid family to accompany them. This seems strange, as Linus was most likely created by a giant impact which would have to leave other fragments. Today’s authors are convinced they found the family belonging to Kalliope and the reason it hasn’t been identified sooner.
Plenty of committed and planned heists give examples of how to steal diamonds and pearls. But how to steal a whole planet? Easy! You just need to be a star in a star forming region.
The authors of today’s paper decided to take a less radical approach into investigating the trans-Neptunian objects. Maybe we don’t need Planet 9 after all?