Late in the day on Thursday, astronomers released this new image of 2020 CD3, a small object now confirmed to be orbiting Earth temporarily. It was apparently captured into Earth orbit 3 years ago. Its fate, here.
International Gemini Observatory image of 2020 CD3 (center, point source) obtained with the 8-meter Gemini North telescope on Hawaii’s Maunakea. The image combines 3 images each obtained using different filters to produce this color composite. 2020 CD3 remains stationary in the image since it was being tracked by the telescope as it appears to move relative to the background stars, which appear trailed due to the object’s motion.
Image via International Gemini Observatory/ NSF’s National Optical-Infrared Astronomy Research Laboratory/ AURA/ G. Fedorets.
The results from NASA’s Mars InSight lander’s first 10 months on the Martian surface have been published in a series of papers.
Artist’s impression of InSight on the martian surface. The seismometer is under the white dome to the left of the landing platform. Image via NASA/JPLK-Caltech.
Pollux, the brightest star in the constellation Gemini, blazes in a golden light next to its bluish-white heavenly twin, Castor, in the evening skies of the Northern Hemisphere’s spring.
A photo of Pollux (Beta Geminorum). The four spikes, called diffraction spikes, are due to starlight diffracted by struts holding the secondary mirror in the telescope tube. The reddish annulus is due to reflections in the telescope's internal optics. Both artifacts are commonly seen in telescope images. Image via Fred Espenak
Bird-banding data in North America shows a spring migration pattern that’s become progressively earlier with each of the last 5 decades, and a fall migration that’s lasting longer than 50 years ago.
Male black-throated blue warbler. Image via Daniel Jauvin/ McCauley Library