menu
close
subscribe

Enjoying EarthSky? Subscribe.

271,817 subscribers and counting ...

EarthSky Voices

EarthSky Voices

Members of the EarthSky community - including scientists, as well as science and nature writers from across the globe - weigh in on what's important to them. Photo by Robert Spurlock.

Ghostly neutrino caught in South Pole ice ushers in a new astronomy

By in Human World | Space | 3 hours ago
By

Last week, scientists announced the 1st known source for ghostly, high-energy neutrinos. The source is a blazar, a billion-solar-mass black hole 3.7 billion light-years away. The discovery establishes a new way to study the universe.

5 things we know – and 5 we don’t – about ‘Oumuamua

By in Space | 4 hours ago
By

Mysterious ‘Oumuamua is the 1st confirmed interstellar object to pass through our solar system.

Pluto: Preparing for the perfect alignment

By in Human World | Space | 3 days ago
By

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.

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

By in Human World | Space | 1 week ago
By

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.

Will we recognize life on a distant world?

By in Space | 1 week ago
By

“We won’t have a ‘yes’ or ‘no’ answer to finding life elsewhere. What we will have is a high level of confidence that a planet appears alive for reasons that can only be explained by the presence of life.”

Why does the ocean have waves?

By in Earth | 2 weeks ago
By

Waves are created by energy passing through water. Here’s what you need to know, in 30 seconds.

Mapping the threat of small near-Earth asteroids

By in Earth | Human World | Space | 2 weeks ago
By

65 million years ago, a monster asteroid wiped out 2/3 of all life on Earth, including the dinosaurs. But an astrophysicist explains why it’s the smaller near-Earth objects (NEOs) that pose a greater imminent threat.

Will your summer will be full of mosquitoes?

By in Earth | Human World | 3 weeks ago
By

Now that it’s summer in the Northern Hemisphere, our thoughts turn to … mosquitoes! Here’s some handy info from a biologist.

Will climate change make rice less nutritious?

By in Earth | Human World | 3 weeks ago
By

As atmospheric carbon dioxide levels rise, rice plants – the primary food source for more than 3 billion people – produce fewer vitamins and other key nutrients. 

10 things about Martian dust storms

By in Space | 4 weeks ago
By

Mars’ massive dust storms have been challenging – and enticing – scientists for decades. From NASA, here’s the scoop on Martian dust.