Have you been watching the 2 brightest planets – Venus and Jupiter- inch closer in the east before sunup? Closest the morning of January 22. Venus is brighter! Photos from the EarthSky community here.
Here’s an alternative explanation to the Planet 9 hypothesis, the idea that a large undiscovered planet in the outer solar system is pulling on some small outer worlds, distorting their orbits.
Artist's concept of distant trans-Neptunian objects, moving in distant orbits around our sun. Some of their orbits are strange, and that strangeness has caused astronomers to search for another undiscovered, large planet in our solar system. Image via University of Cambridge.
Hey skywatchers! Check out this first video in the Chasing Darkness series, a stargazing destination guide. This episode – dark sky preserves in Alberta, Canada.
For the 1st time ever, plants were sprouted on the moon – but didn’t survive long – as part of a biosphere experiment on China’s Chang’e-4 lander.
Photo showing the sprouting cotton seeds in the biosphere experiment on China's Chang'e 4 lander. Image via Chongqing University.