Earth's atmosphere pulses in sync with the sun's fiery outbursts, indicating it is more sensitive to solar activity than previously thought, according to new research.

The European Space Agency 's (ESA) Proba-3 mission, consisting of two spacecraft called the Occulter and the Coronagraph, ...

Instead of using thrusters, SPHEREx relies on a system of reaction wheels to control its orientation. The observatory will ...