Cosmic rays hunted down: Physicists are closing in on the origin of cosmic rays

Space & Earth / Astronomy

5 hours ago | 3.8 / 5 (4) | 3

(PhysOrg.com) -- A thin rain of charged particles continually bombards our atmosphere from outer space. The mysterious particles were first detected 100 years ago but until 10 years ago when a new type of ...

Brightness variations of sun-like stars: The mystery deepens

Space & Earth / Astronomy

13 hours ago | 4.3 / 5 (8) | 5

(PhysOrg.com) -- An extensive study made with ESO's Very Large Telescope deepens a long-standing mystery in the study of stars similar to the Sun. Unusual year-long variations in the brightness of about one ...