Astronomy

Groundbreaking observations of a repeating explosion in space, the recurrent nova LMCN 1968-12a, reveal that it's the hottest burst of its kind ever recorded.Located in the Large Magellanic Cloud, a nearby satellite galaxy of the Milky Way, LMCN 1968-12a is the first recurrent nova outside our galaxy to have been studied in near-infrared light.Beyond its…

If you look up to the sky in the early hours of April 25 you might just see it smiling back at you, NASA skywatchers have forecast.That's when a rare celestial spectacle called a triple conjunction will occur. On the morning of Friday, April 25, Venus, Saturn and the crescent moon will appear close together…

(Image credit: Alan Dyer/Stocktrek Images via Getty Images)The first meteor shower of spring in the Northern Hemisphere, the Lyrids, will peak overnight on Monday, April 21-22. This year, the annual meteor shower will peak in virtually moonless night skies, which should make for a great show.According to the American Meteor Society, around 18 "shooting stars"…

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The universe's missing matter may have finally been found.Astronomers think regular matter — that is, the stuff that isn't dark matter — makes up about 15% of the universe's total mass. However, for years, researchers have run into a problem when trying to quantify it: They haven't been able to find about half of that…

NASA's Curiosity rover has found some of the best evidence yet that ancient life may have existed on Mars — and an answer for what could have wiped it out.When drilling into rocks on Mount Sharp, the central peak of the Red Planet's Gale Crater, the rover found evidence of siderite, an iron carbonate whose…

The unexpected surge of solar activity during the ongoing solar maximum may be tied to a lesser-known, 100-year-long cycle that is just beginning to ramp up again, a new study suggests.If that's true, the next few decades could see further increases in solar activity that may threaten Earth-orbiting spacecraft and continue to trigger vibrant auroras…

Chemical fingerprints of life have been found on a distant exoplanet by NASA's James Webb Space Telescope (JWST). It is the "most promising" evidence yet for alien life, scientists say.These chemicals were detected in the atmosphere of an exoplanet named K2-18b, which is located 124 light-years away from Earth and orbits its star in the…

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An emerald-colored comet discovered at the start of the month has just "erupted" as it continues to race toward the inner solar system, before eventually slingshotting around the sun.The icy outburst, which temporarily caused the comet to brighten, could be a sign that it is a "cold volcano." The eruption also may have implications for…