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Pluto: Preparing for the perfect alignment

Here’s how and why astronomers plan to aim the Hubble Space Telescope and several ground-based telescopes toward Pluto around the July 12 Earth transit.

Heads up! It’s a month of eclipses

Partial solar eclipse July 13. Total lunar eclipse July 27. Partial solar eclipse August 11.

Double moon on July 27? August 27?

Let’s be hoax-busters. This one is sure to be circulating, since it circulates every year. No. Mars will not be as large as the moon on July 27, August 27, or ever.

Fragments of asteroid 2018 LA found in Botswana

Astronomers detected this small asteroid just 8 hours before it struck Earth’s atmosphere over southern Africa on June 2, 2018, producing a terrific explosion. Now researchers report finding its meteorites.

Heads up on July 2019 total solar eclipse

A 5-minute video from the European Southern Observatory on the 2019 eclipse in South America and the South Pacific. Eclipse map, and more.

Virga is rain that doesn’t reach the ground

We’ve all seen virga, but maybe not known what it’s called. Virga is rain that evaporates before it hits the ground. Enjoy these photos!

Have aliens visited Earth? Question worthy of study, says physicist

About 5 percent of all UFO sightings cannot be easily explained by weather or human technology. A physicist argues that there’s compelling evidence to justify serious scientific study and that the skeptics should step aside – for the sake of humanity.

Scientists listen to ocean bubbles

A research team recorded the sound of methane bubbles seeping from the seafloor off the Oregon coast, with the aim of using acoustics to identify – and perhaps measure – this important greenhouse gas in the ocean.

How fireworks get their colors

The beautiful colors in fireworks – so good at stirring our emotions – are pure chemistry.

Dust from Africa spreads into the Americas

This past weekend, a massive dust cloud from Africa’s Sahara Desert swept across the Atlantic and caused hazy skies across Texas, Mexico and parts of Central America.