The best opportunity to potentially see all seven planets is coming up on Feb. 28 around 6:10 p.m. ET, according to Shanahan.
When landing on Mars was nearly impossible, NASA engineers invented giant inflatable airbags to cushion the impact. This video reveals the story behind this remarkable technology used in the ...
To see the parade, find a dark place with a clear view of the western horizon at nightfall. Mercury and Saturn will be low in ...