When they are in the shade, it's night time. SEYMOUR: Hello, Seymour Science here! As we all know, sometimes it’s day… and sometimes it’s night… but why do we have day & night? My guest ...

For the past four months, we’ve been on standard time. But overnight Saturday, we’ll turn our clocks ahead one hour at 2 a.m.

When the lunar night started, their hopes of connecting with the lander were lost once for all. A lunar day means the time taken by the moon to complete one rotation on its own axis. The moon is ...