Artist’s illustration of a double neutron star merger. Credit: NSF/LIGO/Sonoma State/A. Simonnet Scientists from the ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) have described a way to determine the birth population of double neutron stars — some of the densest objects in the Universe formed in collapsing massive […]

Artist’s impression of binary black holes about to collide. Credit: Mark Myers, OzGrav-Swinburne University General relativity, Einstein’s theory of gravity, is best tested at its most extreme — close to the event horizon of a black hole. This regime is accessible through observations of shadows of supermassive black holes and gravitational waves — […]

Optical image of Eta Carinae. Credit: NASA/STScI/ESA ‘Eta Carinae’ is an extraordinary star that has fascinated mankind for decades. It’s surrounded by an expanding ‘Homunculus nebula’, shaped like an hourglass. This nebula was expelled in an energetic explosion called the ‘Great Eruption’ that occurred in the 1840s, when Eta Carinae […]

Artist’s impression of a thin gas cloud formed by tidal disruption from a passing star. Scientists think this is one of the possible ways the cold clump of gas detected in the study could have been formed. Credit: Mark Myers/OzGrav Distant galaxies used as ‘locator pins’ to detect ‘invisible’ gas […]

An artist’s impression of two black holes about to collide and merge. The merger of two black holes in a binary system emits energy that can be detected on Earth by gravitational-wave observatories. The LIGO Scientific Collaboration and the VIRGO Collaboration have announced tens of confident detections of such mergers to date. […]

Image of archaea. Credit: Steve Gschmeissner/Science Photo Library A group of international scientists, including an Australian astrophysicist, has used know-how from gravitational-wave astronomy (used to find black holes in space) to study ancient marine fossils as a predictor of climate change. The research, published in the journal Climate of the Past, […]

Artist’s impression of two black holes about to collide. Credit: Mark Myers, ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav) Over the past five years, astronomy has been revolutionized as scientists have used ripples in the fabric of spacetime, called gravitational waves, to reveal the secrets of the previously hidden […]

Illustrated here is the range of Advanced LIGO and its capability of detecting merging black holes. Credit: LIGO Collaboration / Amber Stuver / Richard Powell / Atlas of the Universe   ENLARGE The Advanced Laser Interferometer Gravitational-Wave Observatory (Advanced LIGO) detectors and the Virgo detector have directly observed transient gravitational waves (GWs) from compact […]