Angry Astronaut and Nextbigfuture commenter are making the case that SpaceX and Elon Musk must switch to nuclear thermal rockets to colonize Mars. I will ...

Nuclear thermal propulsion fuel could reduce the travel time for missions to Mars from six months to just 45 days.

The data used to create the image is from a Hubble Space Telescope project to capture and map Jupiter's superstorm system.

The night sky will offer stargazers a special sight for the next several weeks: Right now, all planets except Mercury can be seen after sundown—then, in late February, the missing planet will join the ...