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  1. spaceplace.nasa.gov › big-bang › enWhat Is the Big Bang? | NASA Space Place – NASA Science for Kids

    Sep 17, 2024 · The Short Answer: The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now—and it is still stretching!

  2. spaceplace.nasa.gov › menu › spaceUniverse | NASA Space Place – NASA Science for Kids

    Sep 17, 2024 · What Is the Big Bang? Why do we call it that? explore; Where Does Interstellar Space Begin? Interstellar space begins where the sun’s magnetic field stops affecting its surroundings. explore; What Is a Satellite Galaxy? What are they and what will become of them? explore; Build your own spacecraft! Become a NASA engineer! do; A Planet Without ...

  3. spaceplace.nasa.gov › dark-matter › enWhat Is Dark Matter? | NASA Space Place – NASA Science for Kids

    Sep 17, 2024 · For the first 150 million years after the Big Bang, there were no galaxies or stars or planets. The universe was just a soup of tiny, tiny things called particles. Gravity, the force that pulls you to the Earth and attracts all matter together, began to pull these particles toward each other.

  4. spaceplace.nasa.gov › james-webb-space-telescope › enWhat Is the James Webb Space Telescope?

    Sep 17, 2024 · The James Webb Space Telescope is the largest, most powerful space telescope ever built. It will allow scientists to look at what our universe was like about 200 million years after the Big Bang. The telescope will be able to capture images of some of the first galaxies ever formed.

  5. spaceplace.nasa.gov › solar-system-formation › enHow Did the Solar System Form? - NASA Space Place

    Sep 13, 2024 · Bits of this material clumped together because of gravity. Big objects collided with bigger objects, forming still bigger objects. Finally some of these objects became big enough to be spheres—these spheres became planets and dwarf planets.

  6. spaceplace.nasa.gov › light-year › enWhat Is a Light-Year? | NASA Space Place – NASA Science for Kids

    Sep 17, 2024 · For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!

  7. spaceplace.nasa.gov › menu › big-bangBig Bang | NASA Space Place – NASA Science for Kids

    Sep 17, 2024 · Contact NASA Space Place Last Updated: September 17th, 2024. NASA science games, articles and activities for kids.

  8. spaceplace.nasa.gov › search › bigBig | NASA Space Place – NASA Science for Kids

    What Is the Big Bang? Why do we call it that? explore; How Does Our Sun Compare With Other Stars? The Sun is actually a pretty average star! explore; What Is a Planet? The answer isn't so simple... explore; Glossary. Find definitions of space and Earth science terms . explore; Hear tiny sounds with a Super Sound Cone!

  9. spaceplace.nasa.gov › hubble › enThe Amazing Hubble Telescope - NASA Space Place

    5 days ago · This led to the “Big Bang” theory, which says that the universe began with an intense burst of energy and has been expanding ever since. Edwin Hubble seated at the 100-inch reflecting telescope at the Mount Wilson Observatory in California.

  10. spaceplace.nasa.gov › galaxies-age › enHow Old Are Galaxies? | NASA Space Place – NASA Science for Kids

    Jan 24, 2019 · The Milky Way is an ancient galaxy that was born only a few hundred million years after the Big Bang. Credit: NASA/JPL Most galaxies are between 10 billion and 13.6 billion years old.

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