Decaying dark matter: Unidentified X-ray emission lines in galaxy cluster spectra may point the way

Scientists search for "decaying" dark matter (DDM) because it offers unique signatures like specific X-ray or gamma-ray lines ...
Scientific American

Two Möbius Strips Combine to Create a Bizarre Object That Only Exists in 4D

In geometry, there are surfaces that do without an inside or outside—and some need at least four dimensions to exist ...

Saturn's rings extend further above and below the ring plane, forming a 'halo'

The Cassini probe took its final orbits, referred to as the Grand Finale Orbits (GFOs), in 2017, before launching itself into ...
IGN

How to Level Up Companions (All Companion Abilities)

At each Friendship Level, a Companion will unlock a new ability or provide you with a gift. Abilities and gifts vary depending on the type of Companion.