Cosmology | Page 4 of 25 | Astronomy.com

Cosmology, Science

How large is the universe? This Week in Astronomy with Dave Eicher

The Euclid image of the Horsehead Nebula, an iconic target for backyard astrophotographers and space telescopes alike. Credit: ESA.

Cosmology, Galaxies, Science, Stars

Euclid telescope releases first awe-inspiring images in dark universe hunt

An animation from the FLAMINGO simulation.

Watch the universe evolve in the most comprehensive simulation ever

The cosmic microwave background (CMB) is a snapshot of the early universe; it is the oldest light we can see. This light has been Doppler shifted into the microwave portion of the spectrum, outside the realm of naked-eye observing. In this image, generated with data from the Planck satellite, different colors represent tiny temperature fluctuations in the universe. Credit: ESA and the Planck Collaboration

Why is the night sky dark?

A frame from the Illustris Simulation

What is the cosmic web made of?

Interested in space? Here are the degrees you can get in astronomy

How vast is the universe? Unimaginably enormous

Time is not an absolute.

Exclusive book excerpt: The Universal Timekeepers

Giant cosmic bubble of galaxies thought to be relic from early universe

The Big Freeze: How the universe will die

star-forming region S106

Alien Life, Cosmology

Is our universe tuned for life?

Cosmology, Robotic Spaceflight

Euclid’s first images offer an early look into the dark universe