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Long ago, before there was time, space, or a single star, there was nothing. Not even empty space. Then, about 13.8 billion years ago, something miraculous happened: .
The bombardment had a secret gift. Many of the comets that smashed into early Earth were made of ice. As they melted, they filled the low places on the crust, creating the first oceans. Volcanoes erupted constantly, spewing gases like water vapor, carbon dioxide, and nitrogen. This thick, poisonous blanket became Earth’s first . the universe and the earth 7th class pdf
For millions of years, the universe was a dark, foggy soup. But gravity, the universe’s invisible glue, started pulling clumps of gas together. These clumps became the first stars, brilliant furnaces that lit up the cosmos. Some stars lived fast and died young, exploding in supernovas that scattered heavier elements like carbon, oxygen, and iron across space. These were the seeds of future planets. Long ago, before there was time, space, or
One of those planets was .
You can copy and paste this text into a PDF or a document to save as a PDF. Chapter 1: The Beginning of Everything The bombardment had a secret gift
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Long ago, before there was time, space, or a single star, there was nothing. Not even empty space. Then, about 13.8 billion years ago, something miraculous happened: .
The bombardment had a secret gift. Many of the comets that smashed into early Earth were made of ice. As they melted, they filled the low places on the crust, creating the first oceans. Volcanoes erupted constantly, spewing gases like water vapor, carbon dioxide, and nitrogen. This thick, poisonous blanket became Earth’s first .
For millions of years, the universe was a dark, foggy soup. But gravity, the universe’s invisible glue, started pulling clumps of gas together. These clumps became the first stars, brilliant furnaces that lit up the cosmos. Some stars lived fast and died young, exploding in supernovas that scattered heavier elements like carbon, oxygen, and iron across space. These were the seeds of future planets.
One of those planets was .
You can copy and paste this text into a PDF or a document to save as a PDF. Chapter 1: The Beginning of Everything
