When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...

Historical observations of the Moon's motion, dating back to ancient civilizations, played a crucial role in the development of timekeeping and calendar systems. The Moon's orbital cycle can be ...

Eclipses are a common phenomenon and throughout history have often been associated with ominous predictions. The number of solar eclipses on Earth (total, annular or partial) is about 5 per year.

Space weather isn’t referring to rain clouds that float through the galaxy. Instead, it’s caused by massive explosions of ...