A satellite positioned above our planet shows the movement of the dividing line between day and night - known by some astronomers as the 'terminator'.

Fact check: Flat Earth claim based on gas pressure fails to account for gravity's impact. Researchers have confirmed the sun and moon's actual sizes and positions in space through various ...

As you read this there is a robot invasion of Mars. Earth sent, by way of immensely powerful rockets, several robot landers to the surface of the famed "Red Planet." The most recent landers ...

En route to land on the moon, a spacecraft snapped views of Earth eclipsing the sun.. The Blue Ghost lunar lander, built by the Texas-based company Firefly Aerospace for NASA, launched to space on ...