Solar System

Hubble Has Accidentally Discovered Over a Thousand Asteroids

The venerable Hubble Space Telescope is like a gift that keeps on giving. Not only is it still making astronomical discoveries after more than thirty years in operation. It is also making discoveries by accident! Thanks to an international team of citizen scientists, with the help of astronomers from the European Space Agency (ESA) and …

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The Giant Planets Migrated Between 60-100 Million Years After the Solar System Formed

Untangling what happened in our Solar System tens or hundreds of millions of years ago is challenging. Millions of objects of wildly different masses interacted for billions of years, seeking natural stability. But its history—including the migration of the giant planets—explains what we see today in our Solar System and maybe in other, distant solar …

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Ice Deposits on Ceres Might Only Be a Few Thousand Years Old

The dwarf planet Ceres has some permanently dark craters that hold ice. Astronomers thought the ice was ancient when they were discovered, like in the moon’s permanently shadowed regions. But something was puzzling. Why did some of these shadowed craters hold ice while others did not? Ceres was first discovered in 1801 and was considered …

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Are Titan's Dunes Made of Comet Dust?

A new theory suggests that Titan’s majestic dune fields may be have come from outer space. Researchers had always assumed that the sand making up Titan’s dunes was locally made, through erosion or condensed from atmospheric hydrocarbons. But researchers from the University of Colorado want to know: Could it have come from comets? The dunes …

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China releases first pictures from Zhurong rover since Mars landing

China’s Zhurong rover sits atop the Tianwen 1 mission’s landing platform on Mars. Credit: CNSA China’s space agency released the first pictures from the Zhurong Mars rover Wednesday, showing the six-wheel robot ready to drive down a ramp from its landing platform to begin exploring the Red Planet. The 529-pound (240-kilogram) Zhurong rover landed Friday, …

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Chinese rover heads for landing on Mars

Artist’s illustration of the Tianwen 1 orbiter and rover at Mars. Credit: CNSA / Chinese Academy of Sciences / Nature Astronomy A Chinese rover outfitted with cameras, a weather station, and a sophisticated laser spectrometer could touch down on Mars as soon as Friday, a feat that would make China the second nation to successfully …

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NASA’s Ingenuity helicopter aces first longer-range flight on Mars

NASA’s Ingenuity helicopter flew farther and faster Sunday than the rotorcraft’s first two test flights in the Martian atmosphere, traveling the length of a football field while exceeding distances and speeds achieved during testing on Earth, officials said. On Sunday’s test flight, the diminutive rotor-driven drone flew a distance of some 164 feet (50 meters) …

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NASA’s Mars helicopter completes second, higher flight

This is the first color image of the Martian surface taken by an aerial vehicle while it was aloft. The Ingenuity Mars Helicopter captured it with its color camera during its second successful flight test on April 22, 2021. At the time this image, Ingenuity was 17 feet (5.2 meters) above the surface and pitching …

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In another first, NASA’s Perseverance rover generates oxygen on Mars

This view from the Perseverance rover’s navigation cameras shows the “Mars 2020” and “Perseverance” name plates on the vehicle’s robotic arm. Credit: NASA/JPL-Caltech In another first, an instrument inside NASA’s Perseverance rover has made oxygen out of carbon dioxide sucked in from the atmosphere of Mars, officials said Wednesday. The technology could help future astronauts …

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SLS core ready for shipment to Florida; NASA still hopes for late 2021 launch

Teams at NASA’s Stennis Space Center in Mississippi hoist the Space Launch System core stage out of the B-2 test stand April 19 after a hot fire test March 18. Credit: NASA Teams at Stennis Space Center in Mississippi removed the core of NASA’s first Space Launch System heavy-lift rocket from a test stand earlier …

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