Scientific, historical and cultural facts about space, galaxies, the planets and other objects in the solar system. The latest discoveries and interesting space-related features can be found on the blog, while the gallery highlights graphics and diagrams that illustrate more aspects of the universe.
Check out some interesting space facts below:
- Space does not begin at a specific altitude above the Earth, but the Kármán line at 100km is a commonly used definition.
- The temperature in the void of space is about −270.45 °C.
- Space is a hard vacuum, meaning it is a void containing very little matter.
- The space between galaxies is not completely empty but has an average of one atom per cubic meter.
- There are an estimated 100-400 billion stars in our galaxy, the Milky Way.
- The universe is observed to be 13.8 billion years old has been expanding since its formation in the Big Bang.
- In the observable universe there are an estimated 2 trillion (2,000,0000,000,000) galaxies.
Find more facts about each of the planets below:
More facts about the solar system below:
Find more facts about different galaxies below: