It sounds like something out of a science-fiction movie. For the past couple of weeks, Earth's orbit has been home to a "mini-moon" the size of a city bus. The celestial object is more than just a ...
These changes in appearance are the phases of the moon. As the moon orbits Earth, it cycles through eight distinct phases. The four primary phases of the moon (new moon, first quarter, full moon ...
Earth is a profoundly isolated rock. The European Space Agency's Hera craft, en route to an asteroid, recently captured footage of our planet and the moon, set against the black ether of space.