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Moon, Venus on September 17 and 18, 2017
They're the sky's 2 brightest objects after the sun, and they're near each other Monday and Tuesday mornings.
September 16, 2017
Goodbye, Cassini!
The Cassini spacecraft has become part of Saturn, the planet it studied so spectacularly and so long. Cassini's last images and final moments, here.
September 15, 2017
More Cassini legacy: Titan’s bonkers atmosphere
Cassini's legacy will endure. Click for a video about the atmosphere of Saturn's large moon Titan, which might resemble that of an early Earth.
September 15, 2017
Mercury/Mars conjunction September 16, 2017
No matter where you live worldwide, an imaginary line from the moon through brilliant Venus - in the east before dawn - points in the general direction of Mercury and Mars.
September 15, 2017
Juno sees Jupiter up-close and personal
A series of images from the Juno spacecraft's 8th close flyby of the gas giant planet
September 14, 2017
Moon and Twins on September 15, 2017
Enjoy the moon and Gemini stars, Castor and Pollux, Friday and Saturday mornings. These 2 stars aren't really twins, but they're noticeably bright and close together on the sky's dome.
September 14, 2017
Irma turns Caribbean islands brown
Wow. Check out these satellite images of Caribbean islands before and after Hurricane Irma
September 13, 2017
Openings in Antarctic sea ice influence global climate
Heat escaping through openings in sea ice influences sea and atmospheric temperatures and wind patterns around the globe - even rainfall around the tropics, says new study.
September 13, 2017
Does organic material in comets predate our solar system?
"If cometary organic molecules were indeed produced in interstellar space—and if they played a role in the emergence of life on our planet—might they not also have seeded life on many other planets of our galaxy?"
September 13, 2017
Farthest lunar perigee on September 13, 2017
The moon reaches perigee - its closest point to Earth - once each month. Today's perigee is the most distant one of 2017.
September 13, 2017
