The European Space Agency has embarked on a new initiative under its Euclid project, which aims to study the impact of dark matter and energy on the visible Universe. Collaborating with the Galaxy ...

A new NASA space observatory is scheduled to launch into orbit this week on a lofty mission to map more than 450 million ...

Sometimes astrophysicists distinguish between the visible universe, which includes only signals emitted since recombination (when hydrogen atoms were formed from protons and electrons and photons were ...

The visible universe—including Earth, the sun, other stars, and galaxies—is made of protons, neutrons, and electrons bundled together into atoms. Perhaps one of the most surprising discoveries ...

Radio astronomers can study emissions from gas giant planets, blasts from the hearts of galaxies, or even precisely ticking ...