NASA announces Venus rover challenge winners

The Venus rover challenge – called “Exploring Hell” – received a great response from countries around the world. NASA said the design ideas submitted will help advance the final design of a mechanical rover that might one day explore the hellish surface of Venus.

Life inside Pluto?

The dwarf planet’s hot birth may have created a warm internal ocean, and where there’s warm water, there might be life.

How many ETs are in our galaxy? Ask the Alien Civilization Calculator

Researchers at Omni Calculator have created the Alien Civilization Calculator, a unique combination of two different methods of trying to determine how many advanced alien civilizations may exist in our galaxy.

How volcanoes explode deep under the ocean

Explosive volcanic eruptions are possible deep down in the sea – although the water masses exert enormous pressure there. An international team reports how this can happen.

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When is the next great comet?

There’s a nice binocular comet – comet NEOWISE – in the early morning sky now. Some experienced observers are catching it with the eye alone. It’s nice … but not great. When will we see our next great comet?

How do waterspouts form?

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.

How to see comet NEOWISE

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.

Eclipse? What eclipse?

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.

‘Astonishing discovery’ of massive prehistoric circle near Stonehenge

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.

10 years of the sun in 1 hour

A new timelapse from NASA’s SDO Observatory condenses an entire solar cycle into 1 hour.

Why fireflies light up

A firefly’s familiar glow is caused by a chemical reaction. Explanation here, plus many wonderful firefly photos.

How do fireworks get their colors?

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.

For the 1st time, a visible light explosion from a black hole merger

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.