Nasa laser launches into space

ICESat-2 will use laser beams to measure ice levels on Earth as it orbits 500km above the planet. from BBC News - World https://ift.tt/2Oq...

ICESat-2 will use laser beams to measure ice levels on Earth as it orbits 500km above the planet.

from BBC News - World https://ift.tt/2OqnjkK