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E.g., 01/18/2018
E.g., 01/18/2018
Your search has returned 3431 images:
  • night sky panorama
  • simulation of the center of the Milky Way
  • illustration of astronauts on Mars
Your search has returned 102041 articles:
  • News

    Pollution is endangering the future of astronomy

    OXON HILL, Md. — Even as technological advances allow astronomers to peer more deeply into the cosmos than ever before, new technologies also have the potential to create blinding pollution.

    Three sources of pollution — space debris, radio interference and light pollution — already are particularly worrisome. And the situation is getting worse. In the next two decades, as many as 20,000...

    01/12/2018 - 13:27 Astronomy, Pollution, Technology
  • Science Ticker

    See a 360-degree visualization of the center of the Milky Way

    View the video

    OXON HILL, Md. — Ever wonder what it would be like to sit at the center of the Milky Way and watch the galaxy swirl by? A video debuted in a January 10 news conference at the American Astronomical Society Meeting provides a glimpse.

    The 360-degree-simulation, made with data from several telescopes, including NASA's Chandra X-ray Observatory and the European Southern...

    01/12/2018 - 06:00 Astronomy
  • Letters to the Editor

    Readers wrangle with definition of ‘species’

    Species shmecies

    In “Defining ‘species’ is a fuzzy art” (SN: 11/11/17, p. 22), Susan Milius asked scientists to define “species.” Schoolbooks may define the concept as a group of organisms that create fertile offspring when mating with each other but not when mating with outsiders. But for researchers specializing in the topic, a single definition is hard to come by.

    “It seems to me...

    01/10/2018 - 12:37 Evolution, Technology, Astronomy
  • Editor's Note

    We’ll be watching the skies, plus a lot more, this year

    If this issue is any clue, 2018 may be the Year of Space. Our pages are packed with a surprising wealth of content for astronomy lovers, and anyone who dreams of otherworldly encounters.

    In our cover story, astronomy writer Lisa Grossman reports on the race to Mars. SpaceX announced last year that it plans to get people to the Red Planet by 2024, but the battle over what humans’...

    01/10/2018 - 12:32 Science & Society, Astronomy, Climate
  • Feature

    How to keep humans from ruining the search for life on Mars

    T he Okarian rover was in trouble. The yellow Humvee was making slow progress across a frigid, otherworldly landscape when planetary scientist Pascal Lee felt the rover tilt backward. Out the windshield, Lee, director of NASA’s Haughton Mars Project, saw only sky. The rear treads had broken through a crack in the sea ice and were sinking into the cold water.

    True, there are signs of...

    01/10/2018 - 11:30 Planetary Science, Astrobiology
  • News

    This artificial cartilage gets its strength from the stuff in bulletproof vests

    A new kind of artificial cartilage, made with the same kind of fiber that fortifies bulletproof vests, is proving stronger than others.

    The fabricated material mimics the stiffness, toughness and water content of natural cartilage, researchers report in the Jan. 4 Advanced Materials. This synthetic tissue could replace the cartilage in a person’s body that naturally wears down and heals...

    01/10/2018 - 07:00 Materials, Biophysics
  • Feature

    Hormone replacement makes sense for some menopausal women

    Internist Gail Povar has many female patients making their way through menopause, some having a tougher time than others. Several women with similar stories stand out in her mind. Each came to Povar’s Silver Spring, Md., office within a year or two of stopping her period, complaining of frequent hot flashes and poor sleep at night. “They just felt exhausted all the time,”...

    01/09/2018 - 14:00 Health
  • Screentime

    Website invites you to probe a 3-D human brain

    In movies, exploring the body up close often involves shrinking to microscopic sizes and taking harrowing rides through the blood. Thanks to a new virtual model, you can journey through a three-dimensional brain. No shrink ray required.

    The Society for Neuroscience and other organizations have long sponsored the website BrainFacts.org, which has basic information about how the human...

    01/09/2018 - 07:00 Neuroscience
  • News

    ‘Laid-back’ bonobos take a shine to belligerents

    Despite a reputation as mellow apes, bonobos have a thing for bad guys.

    Rather than latching on to individuals with a track record of helpfulness, adult bonobos favor obstructionists who keep others from getting what they want. The result may help explain what differentiates humans’ cooperative skills from those of other apes, biological anthropologists Christopher Krupenye of the...

    01/05/2018 - 15:18 Anthropology, Animals, Evolution
  • How the Dead Sea Scrolls survived a war in the 1960s

    Dead Sea Scrolls safe

    The famous Dead Sea Scrolls, rumored lost or damaged during the June war between Israel and Egypt, are safe, according to Antiquity…. On the eve of the war they were packed up and put safely in a strong room in the basement of the Palestine Archaeological Museum (Rockefeller Museum), according to a reliable authority. —  Science News, January 20, 1968

    Update...
    01/04/2018 - 12:30 Archaeology