SpaceEngine is a realistic virtual Universe you can explore on your computer. You can travel from star to star, altering the speed of time, landing on any planet, moon, or asteroid with the ability to explore its alien landscape. | Cosmoknowledge

This huge solar-powered plane was developed by NASA to perform atmospheric research. | CNET

Eleven billion miles away – more than four times the distance from us to Pluto – lies the boundary of our solar system’s magnetic bubble, the heliopause. Here the Sun’s magnetic field, stretching through space like an invisible cobweb, fizzles to nothing. Interstellar space begins. Even New Horizons, which passed Pluto back in 2015 and is now 50 astronomical units from the Sun, hasn’t yet reached the heliopause. Only two active spacecraft, Voyager 1 & 2, have actually ventured out into interstel