At a very steady rate, unstable carbon-14 gradually decays to carbon-12. The ratio of these carbon isotopes reveals the ages of some of Earth’s oldest inhabitants.
Image via Ethan Siegel, Simon Swordy, NASA
Some extremely large and hot stars blaze away with the luminosity of a million suns! But other stars look bright only because they’re near Earth.
Our local star. Image via NASA
A last quarter moon rises around midnight. It appears half illuminated from Earth. The exact last quarter phase will come on February 18, 2017 at 19:33 UTC.
The moon was almost exactly at last quarter when Jenney Disimon in Sabah, North Borneo captured this photo on July 27, 2016 (5:30 a.m. local time, or July 26 at 21:30 UTC).
SpaceX is scheduled to launch its Dragon spacecraft resupply mission to the International Space Station no earlier than 10:01 a.m. EST (1501 UTC) on Saturday, February 18. How to watch.
On July 18, 2016, SpaceX’s Falcon 9 rocket lifted off from Cape Canaveral Air Force Station's Space Launch Complex 40, in Florida, carrying the Dragon resupply spacecraft to the International Space Station for the company’s ninth commercial resupply mission. SpaceX currently is targeting Saturday, Feb. 18, for its 10th resupply mission, this time launching from launch complex 39A at NASA's Kennedy Space Center in Florida. Image via NASA/Tony Gray
How to see the constellation Gemini in the night sky, plus some of ancient lore about the legendary Twins.
Image via Wikipedia
Castor is one of 2 bright stars in the constellation Gemini the Twins. It appears as a single star, but it’s actually a multiple star system.
Banned chemicals from the 1970s have been discovered in the bodies of crustaceans in the deepest of Earth’s ocean trenches.
Hirondellea gigas are voracious scavengers that consume anything that comes down from the surface. Image via Alan Jamieson
Watch for the moon late at night now, or before dawn. Last quarter moon will come on February 18.
It’s hard to comprehend the sheer size of objects in space, but take 2 minutes and give it a try!