Space
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PlanetsLet’s learn about surviving a trip to Mars
Getting to and surviving on the Red Planet will take lots of innovation.
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Science & SocietySome scientists want serious research into UFOs. Here’s why
Science grapples with unknown phenomena all the time. Investigating “unidentified flying objects” shouldn't be different, researchers say.
By Liz Kruesi -
SpaceA massive rogue roaming our galaxy may be a black hole
Alternatively, this unseen wanderer might be a hefty neutron star. Whatever it is, its gravity caused starlight to be warped — and that gave it away.
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PhysicsNoises sound totally different on Mars than on Earth. Here’s why
The Perseverance rover recorded the sound of laser pulses on Mars. Scientists used those recordings to determine the Martian speeds of sound.
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PlanetsAncient volcanoes may have left ice at the moon’s poles
Volcanic eruptions billions of years ago may have produced several temporary atmospheres on the moon that held water vapor.
By Anna Gibbs -
PlanetsThe InSight lander has caught a large ‘earthquake’ on Mars
This magnitude 5 quake is offering scientists a peek at what’s going on beneath the Martian surface.
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PlantsThe first plants ever grown in moon dirt have sprouted
This tiny garden shows farming on the moon may be difficult, although not impossible.
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SpaceBehold: The biggest known comet in our solar system
This “dirty snowball” in space is about twice as wide as Rhode Island and darker than coal.
By Sid Perkins -
EarthA new clock shows how gravity warps time — even over tiny distances
This clock measured how gravity changes the passage of time in different places — even spots just one millimeter apart.
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PhysicsA star called ‘Earendel’ could be the most distant ever seen
A thin red arc found in an image from the Hubble Space Telescope shows starlight from nearly 13 billion years ago.
By Liz Kruesi -
PhysicsGravitational waves ‘kicked’ a newborn black hole across space
Two black holes merged into one, and then sped off at around 5 million kilometers (3.1 million miles) per hour.
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PhysicsSome of the sun’s iconic coronal loops may be ghostly illusions
Wrinkles in the sun’s outer atmosphere might trick the eye into seeing glowing arches, scientists now report.