Hubble Finds That Betelgeuse’s Mysterious Dimming Is Due to a Traumatic Outburst
Observations by NASA’s Hubble Space Telescope are showing that the unexpected dimming of the supergiant star Betelgeuse was most likely caused by an immense amount of hot material ejected into…
NASA Researchers Track Slowly Splitting ‘Dent’ in Earth’s Magnetic Field
A small but evolving dent in Earth’s magnetic field can cause big headaches for satellites. Earth’s magnetic field acts like a protective shield around the planet, repelling and trapping charged…
NASA Study Maps the Roots of Global Mangrove Loss
Using high-resolution data from the joint NASA-U.S. Geological Survey Landsat program, researchers have created the first map of the causes of change in global mangrove habitats between 2000 and 2016…
Gravity Assist: Our Sun, Our Life, with Vladimir Airapetian
How well do you know the Sun? It hasn’t always looked the way it does today. Billions of years ago, the Sun was fainter but also more active, throwing out…
NASA’s TESS Delivers New Insights Into an Ultrahot World
Measurements from NASA’s Transiting Exoplanet Survey Satellite (TESS) have enabled astronomers to greatly improve their understanding of the bizarre environment of KELT-9 b, one of the hottest planets known. “The…