Space
Astronomers scramble as ‘alien megastructure’ star dims again
Tabby’s star’s weird behaviour has been blamed on everything from asteroids to aliens. Now astronomers are racing to watch its dimming in action
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Physics
LIGO could detect gravitational waves’ permanent space-time warp
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Space
Titan’s riverbeds show a terrain built more like Mars than Earth
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Space
Stars can start shining at a smaller mass than we thought
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Space
Watch Cassini’s first two dives between Saturn and its rings
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Space
Marvel at the images from Cassini’s first Grand Finale orbit
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Space
First look at images from Cassini’s dive between Saturn’s rings
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Space
Melting moons could support liveable atmospheres for aeons
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Space
Joint mission to Europa could seek life under the ice
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Space
Icy Enceladus’s tiger stripes are a window on its watery depths
Astrophile is Joshua Sokol's monthly column on curious cosmic objects, from the solar system to the far reaches of the multiverse
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Space
Quickest we could visit another star is 69 years – here’s how
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Space
Satellite swarms could increase space junk risk by 50 per cent
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Physics
Many tiny galaxies could host mammoth black holes
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Space
Saturn’s flying saucer moon Atlas has a smooth fluffy edge
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