Monitoring Earth from above is a messy, inconsistent business. Clouds can block a satellite's view, the angle of the sun can ...

Earth sits furthest from the Sun at aphelion distance each July. This orbital shift changes sunlight by a small margin, yet it explains why summer heat peaks despite the distance.

At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the extent to which Mars is quietly tugging on Earth's orbit and shaping the ...

Isar Aerospace has successfully sent its Spectrum rocket into orbit, demonstrating a privately developed launch system from ...