ScienceDaily: Top Science News

Astrophysicists studying in unprecedented detail a red giant star named V Hydrae have witnessed the star's mysterious death throes. Researchers discovered that the carbon-rich star has expelled six slowly expanding molecular rings and two hourglass-shaped structures ejecting matter out into space at high speeds.

At least hundreds of so-far unidentified species of mammals are hiding in plain sight around the world, a new study suggests. Researchers found that most of these hidden mammals are small bodied, many of them bats, rodents, shrews, and moles.

Researchers have shown a new compound delivered in a nasal spray is highly effective in preventing and treating COVID-19 caused by the Delta variant in mice. The researchers believe this is the first treatment of its kind proven to be effective against all COVID-19 variants of concern reported to date, including alpha, beta, gamma and delta.

Helium-3, a rare isotope of helium gas, is leaking out of Earth's core, a new study reports. Because almost all helium-3 is from the Big Bang, the gas leak adds evidence that Earth formed inside a solar nebula, which has long been debated.