Waterspouts are essentially tornadoes that form over water. They can and do form over all the world’s oceans. In the U.S., they’re most common near the Florida Keys and in the Gulf of Mexico.
Comet C/2020 F3 (NEOWISE) is basically a binocular object, although some experienced observers with pristine skies are reporting they can see it with the eye alone. This post has information and charts that will help you see the comet.
View larger at EarthSky Community Photos
. | Gianluca Masi captured comet NEOWISE along with the International Space Station in this dawn view of Rome, Italy. Gianluca said: "This morning I managed to capture comet Neowise above the epic skyline of Rome: what a sight! The ISS joined the show, too, showing in the same portion of the sky."
Even experienced observers say they couldn’t discern the Earth’s shadow on the moon during the partial penumbral eclipse of July 4-5, 2020.
View at EarthSky Community Photos
. | Rob Pettengill
in Austin, Texas - an experienced moon photographer - caught this image of the full moon Saturday night, July 4, 2020, one minute before midnight. He wrote: "A beautiful full moon for Independence Day in the United States, but where did the eclipse
go? Partial penumbral eclipses are very subtle. Only a small sliver of the sun is hidden by the Earth, in roughly the top third of this image. This small gradual change in illumination is almost impossible to detect without careful photometric measurement." Thanks, Rob!
An ancient circle of deep trenches has been found near Stonehenge. Scientists say the newly discovery site offers insights into the lives of people who lived in the area 4,500 years ago.
A new timelapse from NASA’s SDO Observatory condenses an entire solar cycle into 1 hour.
A firefly’s familiar glow is caused by a chemical reaction. Explanation here, plus many wonderful firefly photos.
"Fireflies on top of the wave of grass and overflowing. Biggest firefly show in years." by Eileen Claffey, June, 2015.
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