October 21, 2015 NASA spots square-shaped 'hole' in the sun A NASA spacecraft has made a surprising find on the surface of the sun: a square-shaped "hole" in the star's outer atmosphere.
October 21, 2015 Black hole gas guzzler may explain weird superbright X-rays A black hole is eating a star faster than scientists had thought was possible, and it's unleashing unusually bright X-ray signals that may help scientists understand a group of weird, superbright objects in deep space.
October 21, 2015 The moon bites a chunk out of the sun On July 26, NASA’s Solar Dynamics Observatory (SDO) noticed something peculiar about its normally uninterrupted view of the sun — a chunk was missing.
October 21, 2015 Sun unleashes major solar flare The sun erupted with a massive solar flare late Thursday, triggering a temporary communications blackout on some parts of Earth.
October 21, 2015 Sun's 8.2-billion-year-old twin found About 250 light-years away in the constellation Capricornus (The Sea Goat) lies a star that looks awfully familiar.
October 21, 2015 Sun will flip its magnetic field soon The sun is gearing up for a major solar flip, NASA says.
October 21, 2015 'Ring of fire' solar eclipse today: how to watch live The moon will block part of the sun today to create a potentially amazing "ring of fire" and you can watch the celestial sight live online.
October 21, 2015 'Ring of fire' solar eclipse this week: what you need to know On Thursday and Friday, skywatchers in parts of Australia and the Pacific region will be treated to a spectacular "ring of fire" solar eclipse, in which the moon blots out all of the sun except for its outer edge.
October 21, 2015 Giant solar wave erupts from the sun The sun celebrated May Day with a spectacular solar eruption Wednesday, unleashing a colossal wave of super-hot plasma captured on camera by a NASA spacecraft.
October 21, 2015 Sun, Mars, Earth to align in rare cosmic event and more in April's night sky Planets abound in the night sky this month.