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An interactive visualization of the enormous objects in our universe. See how the Earth compares to the Sun, black holes and the Milky Way.
Scale of Universe is an interactive experience to inspire people to learn about the vast ranges of the visible and invisible world. Click on objects to learn more.
Apr 22, 2024 · Our galaxy probably contains 100 to 400 billion stars, and is about 100,000 light-years across. That sounds huge, and it is, at least until we start comparing it to other galaxies. Our neighboring Andromeda galaxy, for example, is some 220,000 light-years wide.
Jan 28, 2022 · The size of the universe depends a great deal on its shape. Scientists have predicted the possibility that the universe might be closed like a sphere, infinite and negatively curved like a saddle...
The observable Universe is 93 billion light-years in diameter. Some scientists believe its true size is even scarier than that. By using the Bayesian model averaging, scientists estimated that the Universe is at least 250 times larger than the observable Universe, or at least 7 trillion light-years in diameter.
Sep 26, 2023 · Assume that the distance between Earth and the Sun, known as 1 astronomical unit, is 1 centimeter instead of its actual 93 million miles. In all of human history, mind you, we have...
May 16, 2023 · This website shows how generations of explorers have taken us, step by step, ever farther into the vast expanse of the universe. It is a journey of discovery that has only just begun.
4 days ago · The size of the solar system is defined by the volume of space over which the sun’s influence exceeds those of other nearby stars in the Milky Way galaxy. This influence derives from two ...
Mar 29, 2021 · That's a diameter of 540 sextillion (or 54 followed by 22 zeros) miles. But this is really just our best guess – nobody knows exactly how big the Universe really is. That is because we can only see...
Mar 8, 2024 · On average across its orbital path, it’s about 380,000 km from Earth. That’s already a pretty long way; nearly 30 Earths could fit side by side over that distance! Or think of it this way:...
