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The time until Betelgeuse explodes depends on the predicted initial conditions and on the estimate of the time already spent as a red supergiant. The total lifetime from the start of the red supergiant phase to core collapse varies from about 300,000 years for a rotating 25 M ☉ star, 550,000 years for a rotating 20 M ☉ star, and up to a ...
Earlier observations found that, if placed at the center of our solar system, the massive star Betelgeuse would stretch out beyond the orbit of Jupiter. This new study finds its body would only ...
Betelgeuse’s occultation is the type of event that occurs only once every few decades, Masi said. ... was about to explode in a supernova. While Betelgeuse is bright once more and a ...
Astronomers pointed powerful telescopes at the red giant star Betelgeuse, confirming theories that the star had not almost exploded a few years ago, but it did experience a dimming event.
The estimated time until a gamma-ray burst, or massive, hyperenergetic supernova, occurs within 6,500 light-years of Earth; close enough for its rays to affect Earth's ozone layer and potentially trigger a mass extinction, assuming the hypothesis is correct that a previous such explosion triggered the Ordovician–Silurian extinction event ...
Winds drive ocean currents in the upper 100 meters of the ocean's surface. However, ocean currents also flow thousands of meters below the surface. These deep-ocean currents are driven by differences in the water's density, which is controlled by temperature (thermo) and salinity (haline). This process is known as thermohaline circulation.
Humanity has marveled at the vivid star Betelgeuse for many millennia. Over two thousand years ago, this imperious red object in the constellation Orion caught the eye of the Roman poet Horace:But ...
An ocean current is a ... and shifts in climate in turn impact ocean currents. [20] Human-induced climate change is leading to long-term alterations in ocean and ...