On Dec. 21, 1968, the Apollo program's second manned spaceflight lifted off from Earth to orbit the moon. Many people still remember the greetings from astronauts, sent from space.

We worked out how many trips each of the solar system's eight planets has taken around the sun over the past 4.6 billion years.

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At a time when the world is already being hit with major crisis after major crisis, our sun is behaving in ways that we have never seen before. For as long as records have been kept, the sun has never been quieter than it has been in 2019 and 2020, and we are being warned that we have now entered

The Earth's orbit influences much of our lives, from the length of our year to the changing of the seasons. We are travelling at a speed of approximately 30 kilometres per second or 110 million metres per hour around the Sun yet we don't feel ourselves moving! The Earth takes 365 and a quarter days to orbit the Sun, giving us our 365 day year with an extra day once every four years as a 'leap year'. The Earth is also spinning on an axis, tilted at 23°. This means that different parts of the…

In 1995, astronomer/scientist Michel Mayor and Didier Queloz found the first discovered exoplanet. An exoplanet is a planet that is orbiting or is located outside our Solar system and could potentially pitch its own life. Today we’ll check out some of NASA’s top hits with Earth-like habitable exoplanets and see how they could hold life.

How did Earth get its moon? According to a new theory, it involved a huge, violent impact billions of years ago that vapourized a sizeable chunk of our planet.

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Moon earth shadow. Moons orbit rotation earth cycle vector illustration, lunar orbiting phases diagram with planet in space. Download a free preview or high-quality Adobe Illustrator (ai), EPS, PDF, SVG vectors and high-res JPEG and PNG images.