This artist’s concept shows the nova system HM Sagittae (HM Sge), where a white dwarf star is pulling material from its red giant companion. This forms a hot, blazing disk around the dwarf, which can unpredictably undergo a spontaneous thermonuclear explosion as the hydrogen inflow from the red giant thickens and reaches a tipping point. … Read more
What is massless gravity? Both Newton’s revolutionary laws describing its universal effect and Einstein’s proposal of a deflated spacetime, we have thought of gravity as exclusively within the realm of matter. Now a wild new study suggests that gravity can exist without mass, conveniently eliminating the need for one of the most elusive substances in … Read more
Sign up for CNN’s Science of Miracles newsletter. Explore the universe with news of fascinating discoveries, scientific breakthroughs and more. CNN – An amateur paleontologist has discovered a new species of pterosaur, a flying reptile that lived alongside dinosaurs around 100 million years ago. Kevin Petersen, an avocado farmer and curator of the Kronosaurus Korner … Read more
Space changes you, even during short trips off-planet. Four people who spent three days outside Earth in September 2021 experienced physical and mental changes that included modest declines in cognitive tests, heightened immune systems and genetic changes within their cells, scientists report in a suite of papers published Tuesday in the journal Nature and some. … Read more