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Satellites and spacecraft in the vast region between Earth and the moon and just beyond—called cislunar space—are crucial for space exploration, scientific advancement and national security. But figuring out where

Quasi-periodic oscillations (QPOs) are a rare phenomenon in active galactic nuclei. They have been observed to occur at periods ranging from minutes to hours, days, weeks, and even years across

Where starlight doesn’t reach, new things are born: For the first time, an international research team has directly measured the effect of cosmic radiation in a cold molecular cloud. The

In 2023, a subatomic particle called a neutrino crashed into Earth with such a high amount of energy that it should have been impossible. In fact, there are no known

Four astronauts preparing for an extended stay in space have started quarantine as they get ready for their next big mission.

NASA fueled its new moon rocket in one final make-or-break test Monday, with hopes of sending astronauts on a lunar fly-around as soon as this coming weekend.

NASA on Monday was conducting critical final tests ahead of setting a launch date for its first crewed flyby mission to the moon in more than half a century.

Europe’s ESO star-gazing organization on Monday welcomed plans to call off building a massive green energy project in the Chilean desert which threatened to spoil its telescopes’ view of the

NASA began a two-day practice countdown Saturday leading up to the fueling of its new moon rocket, a crucial test that will determine when four astronauts blast off on a