The Universe is unbelievably huge. It is everything we can touch, feel, sense, measure, or detect, and much that we cannot. It includes people, stars, galaxies, dust clouds, light, and even time. Scientists believe our Universe has existed for almost 14 billion years.
- Light from distant galaxies has taken more than 12 billion years to arrive - so we see them as they were before Earth formed.
- There are more stars in the Universe than there are grains of sand on all of Earth's beaches.
- In its first second, the Universe grew from smaller than an atom to about 1,000 times the size of our solar system today.
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