Ask Astro | Page 10 of 26 | Astronomy.com

Antennas of the Very Large Array

Can astronomers do their work during the day?

Where is the center of the universe?

open and globular star clusters

Galaxies, Stars

Why are open clusters and globular clusters found in different places?

What happens at the center of a black hole?

Illustration of how a radio telescope works

How do radio telescopes work?

A composite of two different times, as seen by Curiosity on Mars

Robotic Spaceflight, Solar System

What time is it on Mars?

Illustration of a kilonova

Is gravity instantaneous?

The Large Hadron Collider at CERN

Does E = mc^2 hold true for dark matter and dark energy?

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?

JWST image of the Pillars of Creation

If protostars aren’t yet generating light through fusion, how can JWST see them?

A frame from the Illustris Simulation

What is the cosmic web made of?

Artist concept of Cassini crashing into Saturn

Alien Life, Solar System

Why was Cassini crashed into Saturn to prevent contamination if Huygens intentionally landed on Titan?