The awe-inspiring distances of the cosmos are hard to visualise, so how can we be certain we are measuring them correctly?

For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

Astronomers using the Green Bank Telescope spotted surprisingly cold, dense hydrogen clouds embedded inside the Milky Way’s ...

A team led by the Italian National Institute for Astrophysics discovered the most distant known fossil galaxy — a relic of ...

Sometimes "the universe comes to us," writes the European Space Agency. For the third time since 2017, an interstellar object ...

Explore HubbleHubble HomeOverviewAbout HubbleThe History of HubbleHubble TimelineWhy Have a Telescope in Space?Hubble by the ...

Particular stars called Cepheid variables allow astronomers to determine distance, and Hubble spotted one of these within M31 ...

NASA has announced an exciting discovery hurtling through our solar system: an interstellar object. It’s a comet, but beyond ...

CAPE CANAVERAL, Fla. (AP) — Astronomers say they've spotted an object in our solar system that's believed to be from another ...