The universe is about 13.8 billion years old, but the observable universe measures around 93 billion light years across. This happens because space itself has been expanding since the Big Bang, stretching distances while light from distant galaxies travels toward us. So when we observe deep space, we are seeing galaxies as they existed billions of years ago, while those galaxies are now much farther away due to cosmic expansion. #universia #universe #observableuniverse #spacefacts #astronomy cos
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The universe is about 13.8 billion years old, but the observable universe measures around 93 billion light years across. This happens because space itself has been expanding since the Big Bang, stretching distances while light from distant galaxies travels toward us. So when we observe deep space, we are seeing galaxies as they existed billions of years ago, while those galaxies are now much farther away due to cosmic expansion. #universia #universe #observableuniverse #spacefacts #astronomy cos
5.8K views3 months ago
FacebookUniversia Uni
Our universe isn’t 13.8 billion years old. According to time dilation and relativity, from another frame of reference it’s just 6 days old. Physics changes how we see time. #science #physics #bigbang #timedilation | Letstalkcosmos
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Our universe isn’t 13.8 billion years old. According to time dilation and relativity, from another frame of reference it’s just 6 days old. Physics changes how we see time. #science #physics #bigbang #timedilation | Letstalkcosmos
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FacebookLetstalkcosmos
How Do We Know the Universe is 13.8 Billion Years Old?
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Universal Page. on Instagram: "Around 13.8 billion years ago, the universe began with an event known as the Big Bang. It was not an explosion in empty space like a bomb. Instead, space itself started expanding from an extremely hot, dense state. Time, space, energy, and matter were all created at that moment. In the first fractions of a second, the universe expanded incredibly fast. As it cooled, tiny particles formed, which later combined to create atoms. Over millions of years, gravity pulled
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How Do We Know the Universe Is 13.8 Billion Years Old? 🌌⏳ The age of the universe isn’t a guess. Expansion rate. Cosmic microwave background. Oldest stars. Independent measurements all point to ~13.8 billion years. That’s calculated — not assumed. #universe #bigbang #astronomy #spacefacts #cosmolgy
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