How Could Laser-Driven Lightsails Remain Stable?

How Could Laser-Driven Lightsails Remain Stable?

It’s a long way to the nearest star, which means conventional rockets won’t get us there. The fuel requirements would make our ship prohibitively heavy. So an alternative is to travel light. Literally. Rather than carrying your fuel with you, simply attach your tiny...
ESA’s cloud mission in the limelight

ESA’s cloud mission in the limelight

Applications 01/02/2024 1373 views 18 likes Dedicated to delivering a wealth of new information on exactly how clouds and aerosols affect Earth’s climate, ESA’s EarthCARE satellite has had the chance to show off prior to engineers embarking upon the careful task of...
A last look at Mercury

A last look at Mercury

Venus (brighter object) and Mercury hang in the January sky in this 2015 shot. By midweek this week, Mercury is lost in twilight, so make sure to catch it early. Credit: Stuart Rankin (Flickr) Friday, February 2Last Quarter Moon occurs tonight at 6:18 P.M. EST. The...
Atmospheres in the TRAPPIST-1 System Should be Long Gone

Atmospheres in the TRAPPIST-1 System Should be Long Gone

Trappist-1 is a fascinating exoplanetary system. Seven worlds orbiting a red dwarf star just 40 light-years away. All of the worlds are similar to Earth in mass and size, and 3 or 4 of them are potentially habitable. Imagine exploring a system of life-rich worlds...