2025年1月2日 · Discover the universe: Learn about the history of the cosmos, what it’s made of, and so much more. Concentrations of matter with gravity so powerful not even light can escape. Collections of stars, planets, and vast clouds of gas and dust bound together by gravity. Worlds beyond our solar system.

2024年10月29日 · The universe is nearly 14 billion years old, our solar system is 4.6 billion years old, life on Earth has existed for maybe 3.8 billion years, and humans have been around for only a few hundred thousand years. In other words, the universe has existed roughly 56,000 times longer than our species has.

The universe is all of space and time [a] and their contents. [10] It comprises all of existence, any fundamental interaction, physical process and physical constant, and therefore all forms of matter and energy, and the structures they form, from sub-atomic particles to entire galactic filaments.

2024年10月30日 · Explore the origin and evolution of the galaxies, stars and planets that make up our universe. Are we alone? Discover and study planets around other stars and explore whether they could harbor life.

2025年1月17日 · Discover how the universe works, explore how it began and evolved, and search for life on planets around other stars as we seek to understand the universe and

We now know that our Universe began 13.8 billion years ago in a hot, dense state we call the Big Bang, then underwent a brief period of incredibly rapid, exponential expansion called inflation, then slowed down to a much slower expansion that has lasted ever since.

1 天前 · CAPE CANAVERAL, Fla. (AP) — Telescopes around the world have spotted a monster radio jet streaming from a quasar dating back to the first 1 billion years of the universe. At double the width of our Milky Way galaxy, this jet of radio waves is the biggest ever detected so early in the history of the universe, astronomers reported Thursday.

2025年1月1日 · The space company started by Mr. Bezos, ... which makes up a vast majority of mass in the universe, but no one knows what it is. ... Michael Roston is a senior staff editor for science. He was ...

2025年1月27日 · To build a complete picture of our universe, scientists gather information both in space and on Earth. Many of NASA’s tools that explore deep space rely on radioisotope power systems supported by the Department of Energy (DOE). DOE researchers also contribute to experiments conducted in space.

2025年1月14日 · Learn about how we use light-years to measure the distance of objects in space. Astronomers have discovered 2,500 so far, but there are likely to be many more! How do gravitational waves give us a new way to learn about the universe? What is an exoplanet? And how do we know they're out there? Exoplanets are far away and hard to see.