News
- Astronomy
Betelgeuse has a tiny companion star hidden in plain sight
Betelgeuse has a sequel — in the form of a companion star that's about the same mass as the sun, orbiting it about once every 2,100 days.
- Astronomy
Starlink satellites’ leaky radio waves obscure the cosmos
Starlink satellites unintentionally emit radio waves that appear more than 10 million times brighter than natural sources, as seen by ground-based radio telescopes.
- Climate
How rapid intensification spawned two monster hurricanes in one week
New maps of wind impacts beyond Helene’s ‘cone of uncertainty’ track highlight how a hurricane’s power extends far inland.
- Chemistry
Scientists may have an explanation for why some batteries don’t last
A long-standing idea of why lithium ion batteries die focuses on lithium movement into the cathode.
