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Articles on Astrophysics
Displaying 1 - 20 of 210 articles
Astronomers caught the bizarre ‘awakening’ of an incredibly rare magnetic star.
Some ancient texts record what were likely dying stars, faintly visible from Earth. If close enough, these events can disturb telescopes and even damage the ozone layer.
The largest study yet of ‘twin stars’ shows planetary orbits may be less stable than we thought.
Eclipses have inspired myths, predictions and scientific discoveries. The total solar eclipse occurring on April 8 provides a once-in-a-lifetime opportunity to engage with science and the cosmos.
With the help of a magnifying glass 4 million lightyears wide, astronomers may have solved the riddle of what burned away the hydrogen fog that pervaded the early universe.
The black hole J0529-4351 is 500 trillion times brighter than the Sun.
Orbital resonance is kind of like musical harmony, but systems that display it are far more rare than songs with harmonic melodies.
The astronomical community has thrived and world-class astronomical facilities have been established in South Africa.
You might hate winter, but at least you know what to expect every year. Other planets have wobbly axes that lead to wild, unpredictable seasons.
The nature of dark energy remains one of the biggest puzzles in cosmology.
Pictures of black holes have a white outline around them when photographed, due to one of black holes’ unique and key features.
Sound needs matter to propagate, so the vast vacuum of space is not just empty − it’s silent.
With an evidence-based strategy and careful evaluation, gender parity in science is achievable.
The universe is expanding faster than physicists would expect. To figure out what processes underlie this fast expansion rate, some researchers are first trying to rule out what processes can’t.
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?
The gravitational field can affect space and time: the stronger gravity is, the slower time moves. This prediction of General Relativity can be used to reveal hidden forces acting on dark matter.
Measuring the ages of planets and stars is tricky. An observational astrophysicist describes the subtle clues that provide good estimates for how old different space objects are.
Massive flashes of energy known as ‘fast radio bursts’ have puzzled astronomers for years – and a new search for links to gravitational waves has so far found no connection.
Black holes are known for pulling in all kinds of stuff – including light. Here’s how that actually works.
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Professor of Astrophysics, University of Sydney
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Professor (Astrophysics), University of Southern Queensland
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University Distinguished Professor of Astronomy, University of Arizona
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John Curtin Distinguished Professor (Radio Astronomy), Curtin University
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