Science

Earth is about 29 percent land and 71 percent oceans. How significant is that mix for habitability? What does it tell us about exoplanet habitability? There are very few places on Earth where life doesn’t have a foothold. Multiple factors contribute to our planet’s overall habitability: abundant liquid water, plate tectonics, bulk composition, proximity to
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Scientists and government representatives meeting at a conference in France voted on Friday to scrap leap seconds by 2035, the organization responsible for global timekeeping said. Similar to leap years, leap seconds have been periodically added to clocks over the last half century to make up for the difference between exact atomic time and the
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PARIS — The European Space Agency has selected its first new astronauts in more than a decade, although long-term flight opportunities for the agency’s astronaut corps remain uncertain. At an event here immediately after a briefing on the agency’s new three-year budget Nov. 23, ESA announced a class of 17 people it selected as a
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Is there anything good about volcanoes? They can be violent, dangerous, and unpredictable. For modern humans, volcanoes are mostly an inconvenience, sometimes an intriguing visual display, and occasionally deadly. But when there’s enough of them, and when they’re powerful and prolonged, they can kill the planet that hosts them. Modern-day Venus is a blistering hellscape.
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Fast-melting glaciers are releasing staggering amounts of bacteria into rivers and streams, which could transform icy ecosystems, scientists warn. In a study of glacial runoff from 10 sites across the Northern Hemisphere, researchers have estimated that continued global warming over the next 80 years could release hundreds of thousands of tonnes of bacteria into environments
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WASHINGTON — A SpaceX Dragon launching soon to the International Space Station is the last cargo version of the spacecraft the company expects to build, with one more crewed spacecraft under construction. At an Nov. 18 briefing about the upcoming SpaceX CRS-26 cargo mission to the station, NASA and SpaceX announced the launch, previously scheduled
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Tardigrades are tiny, incredibly tough animals that can withstand a wide range of dangers, including many that would obliterate most other creatures known to science. Different tardigrade species have adapted to specific habitats all over the Earth, from mountains to oceans to ice sheets. Their resilience can also help them survive accidental adventures beyond the
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Underneath a temple in the ancient ruined city of Taposiris Magna on the Egyptian coast, archaeologists have uncovered a vast, spectacular tunnel that experts are referring to as a “geometric miracle”. During ongoing excavations and exploration of the temple, Kathleen Martinez of the University of Santo Domingo in the Dominican Republic and colleagues uncovered the
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BREMEN, Germany — Spire Global has unveiled a new-generation satellite bus to meet demand for larger and more capable satellites. The 16U platform was announced at the Space Tech Expo Europe in Bremen, Germany, Nov. 15. It is focused on meeting demands of Earth observation and space domain awareness customers with missions that require larger
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