Einstein Probe's Wide-field X-ray Telescope (WXT) detected a burst of low-energy X-rays. Astronomers call such X-rays "soft," even though they are still far more energetic than visible or ultraviolet ...

The European Space Agency (ESA) wants to develop key technologies for a Mars surface lander by the mid-2030s.

The European Space Agency is set to launch a joint space science mission with China in early 2026 after a long collaboration.

Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New ...