Astrophysics and Cosmology

a natural object in space, such as a planet, moon, star, or asteroid.

a force directed toward the centre of a circular or curved path.

light produced when a charged particle moves through a medium faster than light can propagate through that medium.

an orbit with approximately constant distance from the central object.

A spectrum containing all wavelengths without interruption.

the increase in distances between widely separated regions of the Universe as space expands.

Faint microwave radiation left over from the early stages of the Universe, providing strong evidence for the Big Bang model.

a high-energy charged particle arriving from space.

(Λ) - a possible explanation for dark energy involving an approximately constant energy density of space.

The scientific study of the origin, structure, evolution, and future of the Universe.