An astronomer explains why space looks so dark despite containing 200 billion trillion stars.
Artist concept of Gravity Probe B orbiting the Earth to measure space-time, a four-dimensional description of the universe including height, width, length, and time.
(NASA)
The gravitational field can affect space and time: the stronger gravity is, the slower time moves. This prediction of General Relativity can be used to reveal hidden forces acting on dark matter.
Galaxy NGC 6822, neighbouring the Milky Way galaxy, being studied to learn more about stars and dust in the early universe.
(NASA/James Webb Space Telescope)
Rajendra Gupta, L’Université d’Ottawa/University of Ottawa
A new hypothesis suggests that the universe may be twice as old as we had believed. Observations from the James Webb Space Telescope provide new information on the rate of the universe’s expansion.
Star trails take shape around the story Mayall Telescop dome in Arizona.
P. Marenfeld and NOAO/AURA/NSF).jpg
An astronomer suggests an idea to piggyback on the ambitious Breakthrough Starshot project that aims to send nano spacecraft to Alpha Centauri at a major fraction of the speed of light.
You can learn a lot about the cosmos in the kitchen.
Shutterstock/Wikimedia