Ron Cowen

All Stories by Ron Cowen

  1. Space

    Today’s weather: thunder and antimatter beams

    Positrons appear to be common in terrestrial lightning storms.

  2. Space

    New planet small but tough

    Astronomers have confirmed a rocky planet outside the solar system for the first time.

  3. Space

    Superhot solar mystery may be solved

    Jets of hot gas heat the sun’s nebulous outer atmosphere to millions of degrees, well above the temperature on the surface, a new study suggests.

  4. Liquid Acquisition

    Water is the life of the party on Earth. From shallow creeks to cascading waterfalls and raging rivers, it’s the primal heartbeat of the planet, nurturing a wealth of biological systems from the very simple to the amazingly complex. But no one knows for sure how Earth got this most precious of fluids. Credit: NASA/GSFC […]

  5. Space

    Space rock surprise

    Meteorite analysis suggests it may be possible to make amino acids in the absence of water, boosting the chances of finding life elsewhere in the universe.

  6. Space

    Cosmic reincarnation idea may be dead

    Cosmological patterns that were recently put forth as evidence for a pre–Big Bang universe are easily explained by current theory, critics say.

  7. Space

    Collider in the sky

    Protons buffeted by stellar winds in the Eta Carinae star system are accelerated to energies comparable to the maximum power of the world’s biggest particle smasher.

  8. Space

    Crab nebula outbursts shock astronomers

    Short-lived gamma-ray flares recently recorded from the Crab nebula supernova remnant, known for its steady emissions, are perplexing researchers and forcing them to consider new models for particle acceleration.

  9. Space

    Beast at galaxy core sits, lacking spin

    New observations suggest that the Milky Way's central black hole rotates slowly or not at all, reinforcing its image as a gentle gravitational giant.

  10. Space

    Newfound planet stirs old debate

    The discoverers of a fourth body orbiting a nearby star say its origins pose a challenge to existing theory, but some disagree.

  11. Space

    It’s really full of stars

    Astronomers find such an abundance of red dwarfs in eight nearby galaxies that they suggest the stellar population of the universe may be three times current estimates.

  12. Space

    Cosmic rebirth

    Circular patterns in the universe's pervasive background radiation suggest that the Big Bang was not the beginning of the universe, but only the latest of its incarnations.