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Human Sperm Swim Like ‘Playful Otters,’ New Study Finds – HuffPost

Sperm cells are wobblier and wonkier than we ever imagined.

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A new study has revealed that everything we thought we knew about sperm movement was a lie: Those persistent little swimmers don’t wiggle their way towards an egg like a snake, but rather roll around like an otter. 
That revelation, published Friday in the journal “Science Advances,” came from scientists at the University of Bristol and the National Autonomous University of Mexico, who reconstructed the movement of a sperm tail using three-dimensional microscopy. 
The researchers’ findings go …

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Rare “boomerang” earthquake detected under the Atlantic Ocean for the first time – CBS News

“This was completely opposite to how we expected the earthquake to look before we started to analyze the data,” one scientist said.

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For years, scientists have been attempting to track an extremely rare “boomerang” earthquake. Now, they’ve recorded one in the ocean for the first time — and it’s even more bizarre than they expected. 
Earthquakes are the result of rocks breaking on a fault, which is a boundary between two plates. A “boomerang” earthquake, also known as a “back-propagating supershear rupture,” means the fracture travels away from the initial crack before returning to it at even faster speeds, scientists said. 

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Laser beams reflected between Earth and moon boost science – Phys.org

Dozens of times over the last decade NASA scientists have launched laser beams at a reflector the size of a paperback novel about 240,000 miles (385,000 kilometers) away from Earth. They announced today, in collaboration with their French colleagues, that the…

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Dozens of times over the last decade NASA scientists have launched laser beams at a reflector the size of a paperback novel about 240,000 miles (385,000 kilometers) away from Earth. They announced today, in collaboration with their French colleagues, that they received signal back for the first time, an encouraging result that could enhance laser experiments used to study the physics of the universe.
The reflector NASA scientists aimed for is mounted on the Lunar Reconnaissance Orbiter (LRO), a…

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Starlink: SpaceX’s 100th mission may break an incredible reusability record – Inverse

SpaceX’s upcoming launch could raise the bar for reusing rockets.

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SpaceX may be about to take another step in its plan to reuse space rockets.
The company is expected to send up its 11th batch of Starlink satellites in mid-August, sending up 58 craft from Space Launch Complex 40 at the Cape Canaveral Air Force Station in Florida. The mission is also expected to send up three SkySat imagine satellites for Planet as part of a ride-sharing agreement, after the company previously hitched a ride in a Starlink mission in June. The extra satellites will be used to h…

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