The Moon was formed when it collided with Earth billions of years ago.
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Articles on Moon
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Despite the distances involved, people as far apart as the UK and Australia can see the Moon at the same time.
Some space rocks you can get for free – if you know how to identify them. Rarer materials cost more, and the asteroid sample NASA just brought back has a high price tag.
Controlled experiments are impossible in astronomy, as are direct measurements of physical properties of objects outside our solar system. So how do astronomers know so much about them?
India’s Chandrayaan-3 rover has found sulfur on the Moon’s surface at higher concentrations than previously seen. Sulfur, a useful resource, could pave the way for future Moon bases.
Humans have always been fascinated by the moon and before we could really get there we travelled to it in our stories.
Treaties meant to ensure sustainability in space don’t currently regulate private companies, and not every country has signed on to an agreement for sustainable space exploration.
Space missions are still difficult, dangerous and risky – but it’s still early days in the human journey beyond our planet.
India became the first country to land near the south pole of the Moon, a notoriously difficult achievement that also marks them as the fourth country to land on the Moon.
China has made significant advances in space exploration on its own steam. It doesn’t need a partnership with Russia.
The Indian spacecraft could lay the ground for future missions with astronauts, and even for lunar bases.
If an astronaut were to die on Mars, neither cremation nor burial would be good options.
While a return to the Moon will allow the U.S. to collaborate with other nations interested in space, this endeavor is also complicated by geopolitical tensions.
Some people incorrectly say the Moon landings didn’t happen. But the evidence – and logic – isn’t on their side.
One of the gifts that Prime Minister Modi gave to President Biden symbolizes the recipient’s having seen 1,000 full moons, implying a long and auspicious life.
Some time measurements, like months and years, use the movements of the moon and sun, respectively. But other time measurements, like the hour, aren’t clearly connected to astronomical phenomena.
Among the expert witnesses in our justice system, astronomers play a surprising role. This astronomer provides evidence to several cases per week.
There’s a limit to the amount of oxygen we can carry with us in space – particularly if we want to do long-haul journeys to the Moon and Mars.
If we could go sightseeing across our cosmic neighbourhood, these would be some of the best highlights.
Not all lunar eclipses are alike. An astronomer explains the science behind the slight dimming of the Moon on May 5, 2023.
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Top contributors
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Professor of Planetary Geosciences, The Open University
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Senior Curator (Astronomy), Museums Victoria and Honorary Fellow at University of Melbourne, Museums Victoria Research Institute
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Associate Professor in Archaeology and Space Studies, Flinders University
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Professor (Astrophysics), University of Southern Queensland
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Post Doctoral Research Fellow in Space Science, University of Birmingham
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Senior Lecturer in Physics, Nottingham Trent University
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Professor of Planetary and Space Sciences, The Open University
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Professor of Air and Space Law, University of Mississippi
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Andrew Dempster is a Friend of The Conversation.
Director, Australian Centre for Space Engineering Research; Professor, School of Electrical Engineering and Telecommunications, UNSW Sydney
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Podcast host, The Conversation
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Reader in Astrophysics, Keele University
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Space Plasma Physicist, Imperial College London
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Professor of Planetary Science and Exploration, The Open University
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Professor of Strategy and Security Studies, Air University
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Associate Professor, The University of Melbourne
