NASA's James Webb Space Telescope is waiting at its launch site, after years of repeated delays and cost overruns. At one point, the giant new observatory was threatened with cancellation.
Scientists have used a NASA probe way out in space, beyond Pluto, to measure visible light that's not connected to any known source like stars or galaxies.
Scientists have detected a black hole thought to be about 800 million times as massive as our sun that is helping to reveal when the universe filled with starlight.
Over time, the expansion of the cosmos and the passage of light has unlocked 63 orders of magnitude to us, each one a new opportunity for novelty and complexity, says guest blogger Caleb Scharf.
In an essay written in 1939, Winston Churchill pondered the possibility that there might be life elsewhere in the universe. The document was recently rediscovered in a museum in Fulton, Mo.
Unusual galaxies can challenge our understanding of the universe. They're also, generally, pretty cool and exciting.
As 2016 winds down, we take a moment to contemplate the billions of years that led to 2017 and the billions more yet to come.
A new study finds there are about 2 trillion galaxies in the observable universe, up from about 200 billion. It's the first major revision to that number since the 1990s.
It's not exactly close — 25 trillion miles from Earth, say the scientists who spotted it. But that might be near enough for further exploration. It's about Earth's size, with mild temperatures.