Clocks, gravity, and the limits of relativity

The International Space Station will host the most precise clocks ever to leave Earth. Accurate to a second in 300 million years the clocks will push the measurement of time to test the limits of the theory of relativity ...

A late-night disco in the forest reveals tree performance

In 2017, the group from the Optics of Photosynthesis Lab (OPL) developed a new method to measure a small but important signal produced by all plants, and in this case trees. This signal is called chlorophyll fluorescence ...

Travel through wormholes is possible, but slow

A Harvard physicist has shown that wormholes can exist: tunnels in curved space-time, connecting two distant places, through which travel is possible.

Testing the symmetry of space-time by means of atomic clocks

In his Special Theory of Relativity, Einstein formulated the hypothesis according to which the speed of light is always the same, no matter what the conditions are. It may, however, be possible that—according to theoretical ...

Studying how time is perceived in space

Einstein predicted that time slows down the faster you travel and the time-dilation hypothesis has since been proven by flying atomic clocks on aircraft.

Israel flying to moon after SpaceX launch

An Israeli spacecraft rocketed toward the moon for the country's first attempted lunar landing, following a launch Thursday night by SpaceX.

Israel's first Moon mission blasts off from Florida

An unmanned rocket took off from Cape Canaveral in Florida on Thursday night carrying Israel's Beresheet spacecraft, aiming to make history twice: as the first private-sector landing on the Moon, and the first from the Jewish ...

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