Astronomers at the University of Zürich, the ETH Zurich, the University of Leicester and NAOC Beijing have found large amounts of "dark matter" near the Sun.
Astronomers found four monster stars, one more than 300 times the mass of our sun. They were created from the merger of lighter stars in tight binary systems.
Scientists have found that Earth's land areas are much more likely to experience an extreme summer heat wave than they were in the middle of the 20th century.
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