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EarthSky Voices

What is dark energy?

We need dark energy to explain why gravity seems to be driving galaxies in our universe apart instead of pulling them together.

Aryan Mishra invites teens to astronomy

Asteroid discoverer Aryan Mishra wants to open teens' eyes to the beautiful and amazing possibilities that cosmos has in store.

Can El Niño end California drought?

El Niño is expected to bring heavy rains to drought-stricken California. That prospect raises the question: what would it take for the drought to be over?

Did glaciers lure wolves back to California?

More than 90 years after California's last wolf was killed, a pack has been observed near Mt. Shasta. Are the mountain's glaciers a reason the wolves chose this location?

Liquid water elsewhere in our solar system?

If so, where are we likely to find it? Could we ever get to it? Would we be able to drink it? A planetary geoscientist explains.

Global warming makes California drought worse

A new study suggests that natural forces are behind California’s drought, but that global warming has contributed 8-27% to the drought’s severity.

Why do volcanoes erupt?

Volcanoes are channels that transfer molten rock from Earth’s crust to the surface. Here’s why eruptions happen.

Space weather threatens equatorial regions too

Damaging electric currents in space affect Earth's equatorial region, not just the poles, according to new research.

Breakthrough Listen not all about aliens

New SETI project will scan the skies for signs of alien communications, but might also unveil other secrets about the universe.

What the Philae comet lander found

Philae data suggest that organic compounds - which eventually translated into living organisms here on Earth - existed in the early solar system.