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The most comprehensive catalog of exploding white dwarf stars ever assembled has revealed new clues about dark energy, the mysterious force driving the universe’s accelerating expansion. Researchers at The University of Queensland’s School of Mathematics and Physics have led a global effort to compile a dataset containing information on 2,884 Type Ia supernovae used to […] A new study finds that two early-universe objects thought to be faint quasars are actually extraordinarily luminous galaxies powered by bursts of star formation. James Webb Space Telescope observations of the galaxies, seen when the universe was less than a billion years old, reveal signatures of extremely massive stars, including some potentially more than 200 […] We usually think of auroras as beautiful lights in the night sky. I see them as visible traces of a connection between the sun, Earth’s magnetic field and the atmosphere. This led me to an origin-of-life question: Could the planetary structure that produces auroras also have organized chemical reactions on early Earth? Go to Source […] “Seeing the Earth from above is a powerful reminder of our interdependence,” said Thomas Pesquet. The words of France’s 10th astronaut to head into space are a reminder of how we are “in this together,” something the world’s aerospace industry players should take heed of as they gather in Paris for the first International Space […] In 1967, a solar storm nearly triggered World War III by jamming early-warning radar systems in the United States, causing U.S. leaders to think the Soviet Union was responsible. Though society averted catastrophe thanks to timely information from solar forecasters, the threat from space weather remains real. Go to Source Current gravitational-wave observatories aren’t sensitive enough to capture the gravitational waves of binary stars. They can only see the gravitational chirps of black holes just as they are merging. But that will change as more sensitive instruments are developed. Recently, a team of astronomers discovered a binary white dwarf system that could be a good […] In 2012, the Dark Energy Spectroscopic Instrument (DESI) was commissioned to measure the effect of dark energy, the mysterious force driving the expansion of the cosmos. Since then, the DESI Legacy Imaging Surveys have obtained optical images of tens of millions of galaxies and quasars, including through NOIRLab’s Nicholas U. Mayall 4-meter Telescope at Kitt […] Astronomers have detected extreme, never-before-seen behavior from a rare kind of pulsar and stumbled on a surprising link to one of astronomy’s biggest current mysteries. Using 174 hours of radio observations, researchers detected PSR J1227-4853, a rapidly spinning neutron star known as a “transitional millisecond pulsar,” which unleashes hundreds of ultrashort, ultrapowerful “giant pulses.” Their […] When two black holes crash together and merge, the newly formed black hole rings like a bell, sending out gravitational waves with specific frequencies that fade over time. This brief, fading pattern of waves is called ringdown, and it may hold secrets about what is hiding around black holes. Go to Source […] The Sloan Digital Sky Survey (SDSS), the largest multispectral imaging and spectroscopic redshift survey of the cosmos, has released its 20th data release (DR 20). It is also the third release of the survey’s fifth phase (SDSS-V), representing a massive operational expansion of the legacy established with prior releases. This milestone provides an unprecedented look […] Using more than 15 years of observations from the Parkes radio telescope, astronomers detected three rotational glitches in the pulsar PSR J1637−4642—a young neutron star that had shown no signs of glitches since its discovery. The three glitches included one that changed its rotation rate by nearly 3 parts per million. Their paper was posted […] Germany’s Isar Aerospace launched a rocket into orbit from Norway on Saturday as Europe races to boost its ability to economically send satellites into space independently of the United States. Go to Source Astronomers have found two clouds of hydrogen near the Whirlpool galaxy that appear to contain almost no stars. The clouds, discovered with China’s FAST radio telescope, each contain roughly 3 million times the mass of the sun in hydrogen but have no detectable optical counterpart. Their properties are outlined in a new paper published in […] In 1974, Stephen Hawking made a prediction that transformed our understanding of black holes. Black holes, he showed, are not truly black: They slowly lose energy through a quantum process now known as Hawking radiation. The lighter the black hole, the faster it evaporates. Go to Source After an eight-year journey, a spacecraft carrying European and Japanese probes began the monthslong, high-risk approach to Mercury on Thursday to study the sun-scorched planet. Go to Source |
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