To answer this tricky question, we have to look back in time to when the Earth was born, 4.5 billion years ago.
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Artículos sobre Space
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Will new communications licensing costs make small satellites so expensive that they can’t be used for student education?
Pretty much as soon as we understood what galaxies were, we realised they are all moving away from each other. And the ones that are further away are moving faster. In short, the universe is expanding.
With a little bit of knowledge and a few pieces of equipment you too can look at the night sky and see it as a cosmologist does.
It would be a heavy lift, but revising the Iran nuclear deal would have some significant upsides, according to scholars at the University of Maryland.
New jobs and investment for Australia’s growing space industry are promised with the backing of the new space agency. It’s hoped that all states and territories will benefit from a national approach.
Astronomers are gathering an exponentially greater amount of data every day – so much that it will take years to uncover all the hidden signals buried in the archives.
Out there in space there is no air. If you took your helmet off, all the air you need to breathe would whoosh out.
How long before we find a planet just like our own?
When NASA first started planning the Kepler mission, no one knew if the universe held any planets outside our solar system. Thousands of exoplanets later, the search enters a new phase as Kepler retires.
A couple thousand satellites are orbiting Earth right now. Under the right conditions, your naked eye can spot these human-made objects in the night sky.
China’s Tiangong-1 space station is hurtling around Earth out of control and about to come crashing down. It’s just one of thousands of pieces of space junk left orbiting our planet.
SpaceX’s Falcon Heavy could propel two fully loaded city buses more than 50 times the height of Mount Everest at 32 times the cruising speed of a Boeing 747.
When and where you see the Moon in the daytime depends on what phase it is in.
There are plenty of astronomical things to watch out for this year beyond this week’s lunar eclipse, including new Moon landings and a space station falling back to Earth.
A bunch of uncommon things all happening at the same time mean this full moon will have some special attributes.
Dust can be instructive. The analysis of those collected around the comet 67P/Churyumov-Gerasimenko provided new information on the history of the solar system.
In the early 20th century a Russian scientist – regarded as the father of rocketry – made some novel predictions on where we would be in space in the 21st century. So how accurate was he?
‘Oumuamua is likely a relatively young interstellar visitor from a binary star system.
Scientists looking for signs of alien life from the mystery object passing through our Solar system say they’ve found nothing “so far”.
Principales colaboradores
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Professor of Planetary and Space Sciences, The Open University
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University Distinguished Professor of Astronomy, University of Arizona
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Professor (Astrophysics), University of Southern Queensland
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Associate Professor in Archaeology and Space Studies, Flinders University
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Professor of Strategy and Security Studies, Air University
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Emeritus Professor of International Law, Western Sydney University
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Associate Professor in Astronomy, Monash University
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Senior Lecturer in Physics, Nottingham Trent University
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Reader in Astrophysics, Keele University
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Sterrenkenner, History & Philosophy of Science, The University of Melbourne
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Andrew Dempster es Amigo de The Conversation.
Director, Australian Centre for Space Engineering Research; Professor, School of Electrical Engineering and Telecommunications, UNSW Sydney
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Lecturer in Astronomy, Nottingham Trent University
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Space Plasma Physicist, Imperial College London
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Professor of Hypersonic Aerodynamics, The University of Queensland
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Researcher, Air and Space Law, McGill University
