Whether anything could live in Europa's subsurface ocean depends on what kind of salt it contains. Now scientists have found out.
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Articles on Extraterrestrial life
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The ancient question 'Are we alone?' has graduated from being a philosophical musing to a testable hypothesis. We should be prepared for an answer.
The space industry and global interest in all matters inter-planetary is growing.
We will never see 'Oumuamua again, and we may never know exactly what it is. But with the right kind of media coverage it could inspire some kids to take up a career in science.
NASA's InSight Mars lander touches down Nov. 26, part of a careful robotic approach to exploring the red planet. But human exploration of Mars will inevitably introduce Earth life. Are you OK with that?
A moon has been spotted in a star system 4000 light years away – but its structure is confusing.
Elon Musk may be disappointed by recent studies threatening his plans to go to Mars, but planetary scientists are breathing a sigh of relief.
Nearly 50 years since the first man walked on the moon, our morals are still stranded on Earth.
New research on parallel universes forces cosmologists to come to an uncomfortable conclusion.
We could find evidence of life on Europa within a couple of decades.
Using AI to search for ET might help us find things we couldn't even imagine we should look for, but to succeed we also have think critically about how we create and use that technology.
NASA and ESA have signed a letter of intent to collect samples from Mars and return them to Earth.
Scientists looking for signs of alien life from the mystery object passing through our Solar system say they've found nothing "so far".
Scientists used to think that the ocean on Enceladus would be transient, perhaps freezing after a few million years. A new study suggests this isn't the case.
Aliens are highly likely to undergo natural selection, shows new research.
The belief that ancient Egyptians needed help from supernatural beings to built the Giza pyramids relies, unavoidably, on racism and colonial attitudes.
Humanity is the real target for these recordings which continue to inspire us to better understand ourselves and our place in the cosmos.
Hardy lifeforms such as tardigrades can survive almost anything.
Cassini is about to crash into Saturn to avoid contaminating its habitable moon Enceladus.
Earth is a relatively dry planet compared to some of the other ocean worlds in our Solar system. Life needs water so what about life on these other places?
Top contributors
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Professor (Astrophysics), University of Southern Queensland
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Professor of Planetary Geosciences, The Open University
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Professor (Physics), University of Southern Queensland
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Lecturer, University of Southern Queensland
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Professor of Physics, Deputy Director (Solar System) at the Mullard Space Science Laboratory, UCL
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Professor of Planetary and Space Sciences, The Open University
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Laureate Professor of Mathematics, University of Newcastle
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PhD; Lawrence Berkeley Laboratory (retired) and Research Fellow, University of California, Davis
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Instrument Scientist, Australian Nuclear Science and Technology Organisation
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Professor of Astrophysics Education, The Open University
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Senior Astronomer, SETI Institute
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Professor of Astronomy, Vanderbilt University
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Research Fellow/Reader in Planetary Physics, Lancaster University
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Senior Lecturer in Environmental Science and Planetary Exploration, University of Stirling
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Professor, School of Computing, Engineering, & Maths, Western Sydney University
