Many, perhaps most, fireworks displays have been canceled in 2020 due to the pandemic. Still, it’s fun to contemplate the fact that the beautiful colors in fireworks – so good at stirring our emotions – are created by chemistry.
Different kinds of metal salts produce different colors in fireworks. Image via NASA.
In recent years, black hole mergers in our universe have been detected via ripples in spacetime known as gravitational waves. Now, for the first time, astronomers believe they’ve observed visible light from a black hole merger, in a peculiar 3-black-hole system.
Artist's concept of a supermassive black hole and its surrounding disk of gas. Embedded within this disk are 2 smaller black disks; they represent the 2 smaller black holes, which orbit one another and the larger hold. holes orbiting one another. Image via Caltech
/ R. Hurt (IPAC).
SlothBot is a slow-moving and energy-efficient robot that can linger in the trees to monitor animals, plants, and the environment below.
Image via Georgia Tech. https://rh.gatech.edu/news/636291/slothbot-garden-demonstrates-hyper-efficient-conservation-robot
Sure, M13, the Great Hercules cluster, is wonderful. But some amateur astronomers say this cluster, M5, is even better. How to find it in your sky.
July’s full moon is at 04:44 UTC on July 5, but it will look full before and after that date. What makes the moon look full?
See the winners of the International Dark-Sky Association (IDA) 1st annual photography contest.
View larger | https://earthsky.org/upl/2020/06/Mihail-Minkov-Star-Catcher-IDA-contest-6-30-2020-scaled-e1593520866721.jpg “Star Catcher”, Black Sea Coast of Bulgaria. Photo credit: Mihail Minkov
Astronomers from Western University in Canada have discovered six more possible exomoons orbiting distant exoplanets, in data from the Kepler Space Telescope.
Artist's concept of a habitable exomoon orbiting a distant exoplanet similar to Saturn. Astronomers have now discovered what may be six more exomoons orbiting exoplanets ranging from 200 to 6,000 light-years away. Image via SpaceRef/ Astrobiology Web.
Astronomers from the University of Göttingen in Germany have discovered two, and possibly three, super-Earth exoplanets orbiting the nearby red dwarf star Gliese-887.
Artist's concept of Gliese-887b and Gliese-887c orbiting their red dwarf star. Image via Mark Garlick/ University of Göttingen.
A new study from scientists in the UK suggests that atmospheric dust could increase the habitability of some exoplanets, especially those orbiting red dwarf stars.
Three computer simulations depicting how airborne dust can be distributed by winds on rocky exoplanets like Earth. Image via Denis Sergeev/ University of Exeter/ ScienceAlert.