• 23996

    Hubble constant: A new way to measure the expansion of the universe

    Using a measurement of the clustering of the galaxies surveyed, plus other information derived from observations of the early universe, researchers have measured the Hubble constant with an uncertainly of less than 5 percent. The new work draws on data from a survey of more than 125,000 galaxies.

  • 23907
  • 23883

    Exoplanet Aurora: An Out-Of-This-World Sight

    Earth's aurorae, or Northern and Southern Lights, provide a dazzling light show to people living in the polar regions. New research shows that aurorae on distant "hot Jupiters" could be 100-1000 times brighter than Earthly aurorae.

  • 23857
  • 11658

    Unexplained pattern of cosmic rays discovered

    Researchers saw an unusual pattern when they looked at a "skymap" of the relative intensity of cosmic rays directed toward the Earth's Southern Hemisphere, with an excess of cosmic rays detected in one part of the sky and a deficit in another.

  • 11578

    Potentially hazardous asteroid might collide with the Earth in 2182

    The potentially hazardous asteroid ‘(101955) 1999 RQ36’ has a one-in-a-thousand chance of impacting the Earth, and more than half of this probability indicates that this could happen in the year 2182, according to a new study.

  • 11453

    NASA telescope finds elusive buckyballs in space for first time

    Astronomers using NASA's Spitzer Space Telescope have discovered carbon molecules, known as "buckyballs," in space for the first time. Buckyballs are soccer-ball-shaped molecules that were first observed in a laboratory 25 years ago.

  • 11432

    Hyperfast star was booted from Milky Way

    A hundred million years ago, a triple-star system was traveling through the bustling center of our Milky Way galaxy when it made a life-changing misstep. The trio wandered too close to the galaxy's giant black hole, which captured one of the stars and hurled the other two out of the Milky Way.

  • 11404

    Evidence of water in lunar rocks: Water on moon may be widespread, similar to Earth's

    That dry, dusty moon overhead? Seems it isn't quite as dry as it's long been thought to be. Although you won't find oceans, lakes, or even a shallow puddle on its surface, a team of geologists has found structurally bound hydroxyl groups in a mineral in a lunar rock returned to Earth.

  • 11397

    Black hole jerked around twice

    Scientists have found evidence that a giant black hole has been jerked around twice, causing its spin axis to point in a different direction from before.

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