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E.g., 07/16/2019
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  • News

    Scientists still can’t agree on the universe’s expansion rate

    SANTA BARBARA, Calif. — It’s one of the most talked-about issues in physics: Two measurements of the universe’s expansion rate disagree. Now, a technique that aimed to resolve the mismatch has produced a third estimate that falls between the previous two. So the controversy endures, scientists report in a study accepted in the Astrophysical Journal. 

    One measurement of how fast the...

    07/16/2019 - 14:01 Cosmology, Physics, Astronomy
  • Reviews & Previews

    Carbon plays a starring role in the new book ‘Symphony in C’

    Symphony in CRobert M. HazenW.W. Norton & Co., $26.95

    Carbon is by no means the most abundant element in the cosmos, but it is undoubtedly the most important to life as we know it. For every 1,000 hydrogen atoms in the universe, there are only five or so carbon atoms. But every cell in the human body — indeed, every living cell on Earth — relies on carbon as the chemical...

    06/10/2019 - 06:00 Chemistry, Evolution, Cosmology, Ecosystems
  • News

    In a first, magnetic fields have been spotted between two galaxy clusters

    For the first time, astronomers have sighted magnetic fields between two galaxy clusters — a find that suggests some of the largest scale structures in the universe are magnetized.

    The fields run between the galaxy clusters Abell 0399 and Abell 0401, which are beginning to merge about 1 billion light-years from Earth, researchers report in the June 7 Science. Radiation from electrons...

    06/06/2019 - 14:00 Astronomy, Cosmology
  • News

    Hidden ancient neutrinos may shape the patterns of galaxies

    Shadowy messengers from the Big Bang have seemingly left their mark on ring-shaped patterns imprinted on the sky.

    Subatomic particles called neutrinos, released just one second after the universe’s birth 13.8 billion years ago, continually stream through the universe and are exceedingly hard to spot. But circular patterns of galaxies scattered across the sky reveal signs of the shy...

    03/04/2019 - 11:00 Cosmology, Physics, Astronomy
  • News

    A cosmic flare called the ‘Cow’ may reveal a new way that stars die

    SEATTLE — Astronomers may have discovered a new way that stars can die. A mysteriously brief and bright burst whimsically called the “Cow” reveals an entirely new type of stellar death.

    The details of that stellar doom, however, remain hazy. Scientists are still debating whether the flare-up, spotted on June 16, 2018, was from an unusual type of star that was eaten by a black hole, or...

    01/14/2019 - 11:12 Cosmology, Astronomy
  • News

    A second repeating fast radio burst has been tracked to a distant galaxy

    SEATTLE — Astronomers have spotted a second repeating fast radio burst, and it looks a lot like the first. The existence of a second repeating burst suggests there could be many more of the mysterious signals in the cosmos.

    The burst, called FRB 180814.J0422+73, is one of 13 newly discovered fast radio bursts, or FRBs — brief, bright signals of radio energy that come from distant...

    01/09/2019 - 13:08 Cosmology
  • News

    Voyager 2 spacecraft enters interstellar space

    Voyager 2 has entered interstellar space. The spacecraft slipped out of the huge bubble of particles that encircles the solar system on November 5, becoming the second ever human-made craft to cross the heliosphere, or the boundary between the sun and the stars.

    Coming in second place is no mean achievement. Voyager 1 became the first spacecraft to exit the solar system in 2012. But that...

    12/10/2018 - 12:57 Cosmology, Particle Physics