Curious Kids: What would happen if gravity was reduced by half?

If gravity was half as strong, you could jump much higher.

Jacco van Loon, Astrophysicist and Director of Keele Observatory, Keele University • conversation
June 29, 2020 ~5 min

Tags: space gravity curious-kids

Meteorites from Mars contain clues about the red planet's geology

Martian meteorites allow scientists here on Earth to decode that planet's geology, more than a decade before the first missions are scheduled to bring rocks back home from Mars.

Arya Udry, Assistant Professor of Igneous Petrology, Planetary Science, University of Nevada, Las Vegas • conversation
June 16, 2020 ~6 min

Tags: space nasa mars gravity volcanoes antarctica earth meteorites outer-space asteroids national-science-foundation mars-rover sahara rock life-on-mars morocco martian-volcanoes

Pairing lasers with microwaves makes mind-bogglingly accurate electronic clocks – a potential boon for GPS, cell phones and radar

Researchers have made some of the most accurate clocks imaginable in recent years, but the trick is harnessing those clocks to electronics. Using lasers to tune microwaves bridges the gap.

Franklyn Quinlan, Physicist, National Institute of Standards and Technology • conversation
May 22, 2020 ~7 min

Tags: physics astronomy dark-matter gravity laser gps cell-phones microwave black-holes metrology radar power-grid atomic-clocks frequency

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