A ripple of bright blue threads through this galaxy like a misshapen lake system. The foreground of this image is littered with nearby stars with their gleaming diffraction spikes. A keen eye can also spot a few other galaxies that, while masquerading as stars at first glance, reveal their true nature on closer inspection. The central galaxy streaked with colour, IC 4870, was discovered by DeLisle Stewart in 1900 and is located approximately 28 million light-years away. It contains an active galactic nucleus, or AGN: an extremely luminous central region so alight with radiation that it can outshine the rest of the galaxy put together. Credit: ESA/Hubble & NASA

Hubble Images a Galaxy with Threads of Blue

Hubble Images a Galaxy with Threads of Blue A ripple of bright blue gas threads through this galaxy like a misshapen lake system. The foreground…

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NASA

Mars mission: how increasing levels of space radiation may halt human visitors

Mars mission: how increasing levels of space radiation may halt human visitors NASA Gareth Dorrian, Nottingham Trent University and Ian Whittaker, Nottingham Trent University From…

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CSIRO Parkes radio telescope has discovered around half of all known pulsars. Wayne England, Author provided

Fifty years ago Jocelyn Bell discovered pulsars and changed our view of the universe

Fifty years ago Jocelyn Bell discovered pulsars and changed our view of the universe CSIRO Parkes radio telescope has discovered around half of all known…

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This artist’s impression shows the temperate planet Ross 128 b, with its red dwarf parent star in the background. This planet, which lies only 11 light-years from Earth, was found by a team using ESO’s unique planet-hunting HARPS instrument. The new world is now the second-closest temperate planet to be detected after Proxima b. It is also the closest planet to be discovered orbiting an inactive red dwarf star, which may increase the likelihood that this planet could potentially sustain life. Ross 128 b will be a prime target for ESO’s Extremely Large Telescope, which will be able to search for biomarkers in the planet's atmosphere. Credit: ESO/M. Kornmesser

Closest Temperate World Orbiting Quiet Star Discovered

Closest Temperate World Orbiting Quiet Star Discovered A temperate Earth-sized planet has been discovered only 11 light-years from the Solar System by a team using…

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Gravitational lensing (arcs and streaks in the picture) in the galaxy cluster Abell 370. NASA/ESA

Method to weigh galaxy clusters could help us understand mysterious ‘dark matter’ structures

Method to weigh galaxy clusters could help us understand mysterious ‘dark matter’ structures Gravitational lensing (arcs and streaks in the picture) in the galaxy cluster…

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Galactic cosmic rays (GCRs) are of most concern to NASA. It is challenging to shield against GCRs. They come from exploding stars called supernovae. Credits: NASA

Positive, Negative or Neutral, It All Matters: NASA Explains Space Radiation

Positive, Negative or Neutral, It All Matters: NASA Explains Space Radiation Charged particles may be small, but they matter to astronauts. NASA’s Human Research Program…

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Artist’s rendition of a typical millisecond pulsar binary system in which the shape of the companion star (l.) is deformed by the gravitational pull of the pulsar (r.) seen emitting beams of radiation. Credit: NASA

Amateur Astronomer Helps Uncover Secrets of Unique Pulsar Binary System

Amateur Astronomer Helps Uncover Secrets of Unique Pulsar Binary System astrophysicist and an amateur astronomer have teamed up to reveal surprising details about an unusual…

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Artist concept of the Van Allen Probes. Credits: JHUAPL

NASA’s Van Allen Probes Catch Rare Glimpse of Supercharged Radiation Belt

Our planet is nestled in the center of two immense, concentric doughnuts of powerful radiation: the Van Allen radiation belts, which harbor swarms of charged…

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This artist's conception shows a red dwarf star orbited by a pair of habitable planets. Because red dwarf stars live so long, the probability of cosmic life grows over time. As a result, Earthly life might be considered "premature." Christine Pulliam (CfA)

Is Earthly Life Premature from a Cosmic Perspective?

The universe is 13.8 billion years old, while our planet formed just 4.5 billion years ago. Some scientists think this time gap means that life…

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