There are countless experiments, observations and demonstrations that have, time and time again, revealed the curve of the Earth. And it all starts with the horizon. As objects recede from you ...

Our planet's closest and brightest neighbor will pass approximately between the Earth and sun this week, in what's called an ...

In the coming days ahead, if any of your friends or relatives remark to you that they saw a "strange UFO" on the way to work ...

The final act of the Blue Ghost lander's busy two weeks on the moon was to send back sunset shots featuring Earth and Venus.

In a groundbreaking achievement, the Event Horizon Telescope (EHT) Collaboration has conducted the highest-resolution ...