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E.g., 03/19/2018
E.g., 03/19/2018
Your search has returned 24 images:
  • illustration of two inner TRAPPIST-1 planets
  • José Dinneny
  • Venus
Your search has returned 170 articles:
  • News

    Some of TRAPPIST-1’s planets could have life-friendly atmospheres

    It’s still too early to pack your bags for TRAPPIST-1. But two new studies probe the likely compositions of the seven Earth-sized worlds orbiting the cool, dim star, and some are looking better and better as places to live (SN: 3/18/17, p. 6).

    New mass measurements suggest that the septet probably have rocky surfaces and possibly thin atmospheres, researchers report February 5 in...

    02/05/2018 - 11:00 Astronomy, Exoplanets
  • 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

    José Dinneny rethinks how plants hunt for water

    José Dinneny, 39Plant stress biologistCarnegie Institution for Science 

    José Dinneny wants us to see plants as stranger things.

    “They’re able to integrate information and make coherent decisions without a nervous system, without a brain,” he points out. Plus, plants find water without sight or touch. For too many of us, however, lawns, salads and pots on a sunny windowsill make...

    10/04/2017 - 13:52 Plants, Genetics, Agriculture
  • Editor's Note

    Patience is one virtue scientists must embrace

    There’s a lot of waiting in science. Collecting and interpreting evidence demands skill and commitment, creativity and curiosity — and time. Though Saturn has been known since ancient times, Galileo first observed it with a telescope in 1610. He saw the rings, but didn’t identify them as such. Not until the 1650s did Dutch astronomer Christiaan Huygens report a flat ring around Saturn...
    08/23/2017 - 16:01 Science & Society, Astronomy
  • News

    Evidence mounts for an ocean on early Venus

    Venus may have been all wet early on.

    New simulations suggest that if the now-hellish planet had just the right amount of cloud cover, carbon dioxide and water to start with, Venus could have formed an ocean. The result, published online July 18 in the Journal of Geophysical Research: Planets, provides a new clue to whether Venus could have ever supported life.

    The finding could...

    08/01/2017 - 07:00 Planetary Science
  • News

    Half of the Milky Way comes from other galaxies

    View the video

    Galaxies may grow by swiping gas from their neighbors.

    New simulations suggest that nearly half the matter in the Milky Way may have been siphoned from the gas of other galaxies. That gas provides the raw material that galaxies use to build their bulk. The finding, scheduled to appear in the Monthly Notices of the Royal Astronomical Society, reveals a new, unexpected...

    07/26/2017 - 21:00 Astronomy
  • Feature

    Life might have a shot on planets orbiting dim red stars

    Our corner of the galaxy teems with alien worlds. In the 25 years since the discovery of the first planets beyond our solar system, astronomers have found more than 3,600 worlds orbiting other stars. A select few have become tantalizing targets in the search for life despite orbiting stars that are much smaller, cooler — and in many ways harsher — than the sun.

    Just 39 light-years away,...

    06/14/2017 - 10:00 Exoplanets
  • Screentime

    Citizen scientists join the search for Planet 9

    Astronomers want you in on the search for the solar system’s ninth planet.

    In the online citizen science project Backyard Worlds: Planet 9, space lovers can flip through space images and search for this potential planet as well as other far-off worlds awaiting discovery.

    The images, taken by NASA’s Wide-field Infrared Survey Explorer satellite, offer a peek at a vast region of...

    05/29/2017 - 07:00 Planetary Science, Science & Society
  • Feature

    Evidence falls into place for once and future supercontinents

    Look at any map of the Atlantic Ocean, and you might feel the urge to slide South America and Africa together. The two continents just beg to nestle next to each other, with Brazil’s bulge locking into West Africa’s dimple. That visible clue, along with several others, prompted Alfred Wegener to propose over a century ago that the continents had once been joined in a single enormous landmass....

    01/11/2017 - 08:38 Earth
  • Feature

    These 2016 stories could be really big — if they're true

    These findings would have rocked the scientific world, if only the evidence had been more convincing.

    New Planet 9 clues

    A giant planet lurking at the outskirts of the solar system could explain the odd orbits of far-flung hunks of icy debris (SN: 2/20/16, p. 6). If the planet exists, its average distance from the sun would be between 500 and 600 times Earth’s distance (SN: 7/23/16, p. 7...

    12/23/2016 - 10:00 Astronomy, Cells, Evolution