Sound doesn't travel in space.
255
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
A comet's tail always points away from the sun.
2
Summer on Uranus lasts for 21 years.
358
It would take more than 150 years to drive a car to the sun.
569