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Mysterious 'Planet Nine' Is Probably 5 to 10 Times the Size of Earth
February 28, 2019 | ArticleThere could be a planet hiding out on the distant frontiers of our solar system. Astronomers have published new details about what it probably looks like.
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Newfound 'FarFarOut' Is Most Distant Solar System Body Ever Seen
February 28, 2019 | ArticleAstronomers just discovered an object, dubbed FarFarOut, that lies 140 astronomical units from the sun. That's 140 times the Earth-sun distance, which is about 93 million miles (150 million kilometers).
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An Exploding Asteroid Blasted Across Mars' Surface in the Last 10 Years
February 27, 2019 | ArticleSometime in the last decade, something heavy slammed into the Martian atmosphere and blasted apart into a hard rain of superheated material.
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Ripples in Space-Time Could Help Solve Cosmic Mystery of How Fast Universe Is Expanding
February 27, 2019 | ArticleAnalyzing ripples in the fabric of space and time created by pairs of dead stars may soon solve a cosmic mystery surrounding how quickly the universe is expanding — if scientists are lucky.
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Maybe Dying Stars Fart So Much Because They're in a Relationship
February 26, 2019 | ArticleThese stars aren't really that gassy, they just look like they are.
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Failed 1970s Venus Probe Could Crash to Earth This Year
February 25, 2019 | ArticleThe Soviet Union launched the Cosmos 482 Venus probe on March 31, 1972. But the failed Venus craft is crashing back to Earth soon.
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Weird 'Snowman-Pancake' Asteroid Gets Its Close-Up. And It Really Is an Oddball.
February 24, 2019 | ArticleThe best-ever photos of Ultima Thule have made it down to Earth, and they heighten the intrigue about the frigid and faraway world.
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Why It'll Take Israel's Lunar Lander 8 Weeks to Get to the Moon
February 22, 2019 | ArticleAn Israeli moon lander just took to the skies, but we'll all have to wait nearly two months for its historic touchdown try.
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Our Atmosphere Is So Big It Tickles the Moon
February 21, 2019 | ArticleThe wispy outermost layer of Earth's atmosphere extend much deeper into space than scientists realized -- deep enough that the moon orbits through it.
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A Brilliant Daytime Meteor Exploded Over Cuba This Month. Here's Where It Came From
February 21, 2019 | ArticleAstronomers just got the goods on the meteor that flared up over Cuba earlier this month.
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