Unlike regular clocks, atomic clocks are highly accurate, enabling scientists to use them to measure gravity.
A strontium atom is suspended in high vacuum and illuminated between two electrodes with a blue laser.
From an outpost on the moon and build flying cars to funding cut for the international space station and earth science missions, the budget covers a lot of things
The weapon test, from Kazakhstan's Sary-Shagan testing range, was successful despite frigid weather conditions prevailing in the region
Elon Musk's next drone ship will be used on the east coast to handle landings at Cape Canaveral. SpaceX uses drone ships as landing pads for their Falcon 9 rocket cores in the sea.
The clip is part of the second season of National Geographic's documentary series "Mars" scheduled to air in spring.
The craft will switch to software-based stellar navigation to conserve power and extend service life.
The launch, in which a Falcon 9 rocket will carry a 1350 kg Paz satellite and two 400 kg Starlink demo satellites into to a 514km Sun-Synchronous Orbit, is set for 17 February.
The algorithm came up with some bizarre results after learning from genuine candy heart messages.
Marines are the first and so far the only branch in the US armed forces, apart from the Special Operations Command, to provide drones to soldiers on the ground at this level.
The Ivan Gren will be delivered to the Navy by spring this year.
Updates on where the Roadster is headed and wild conspiracies about the launch.
Experts reportedly claim that Beijing's mid-course anti-missile system can shoot down missiles from North Korea and India.
The army is testing the robotic Humvee to find out if the autonomous vehicle can engage targets with its remote-controlled machine gun.
"We all need to lighten up in the kitchen sometimes, don't we?" Chef Gordon Ramsay said in a statement.