An atmospheric river has been pummeling California since the weekend, with wind, heavy rain and snow at high elevations. Another one is expected later today.
Binary stars - a star system consisting of two stars - are extremely useful. They give all the information needed to measure mass of a star. Here is how.
Have you ever seen a fallstreak hole or hole-punch clouds? They're a type of cloud with a flat layer interrupted by a big hole, often with wisps at the center.
Social media behemoth Meta is planning to use crowdsourced 'community notes' for factchecking. Some experts worry this will only increase online polarization.