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EarthSky Voices

Are these non-humans conscious?

Lots of non-humans – octopuses, crows, monkeys, machines – are intelligent. Could some also be conscious?

Do no harm to life on Mars? Ethical limits of Prime Directive

A philosopher argues that now is the time to figure it out, before we make the inevitable discovery of extraterrestrial life.

Your top 3 tips to avoid mosquito bites

Simple things you can do to get fewer mosquito bites this summer.

Just 40 light-years away, 3 potentially habitable planets

Earth-like planets aren't exclusively orbiting sunlike stars. Ultracool dwarf star TRAPPIST-1 hosts 3 potentially habitable planets.

Chernobyl all-time worst nuclear accident

The meltdown at the Chernobyl Nuclear Power Plant on April 26, 1986 exposed 572 million people to radiation. It was far worse than the 2011 Fukushima accident.

Top 6 things about gravity

Gravity does far more than make things fall down. It governs the motion of planets around the sun, holds galaxies together and determines the structure of the universe.

Another wave of bird extinctions in the Americas?

Several bird species are taking their final bows on the global evolutionary stage, and winking out. The situation in northeast Brazil is particularly dire.

Astronomers await pings from troubled Hitomi

An unknown disaster seems to have befallen the Japanese satellite that launched in February. Why X-ray astronomers are anxious for good news.

Watch giant ice bridge collapse

An ice bridge collapsed at Perito Moreno Glacier in Argentina earlier this month. Hundreds of tourists and locals gathered to witness the dramatic event.

Could our sun emit killer superflare?

Solar eruptions from our sun are nothing compared to eruptions from some other stars - so-called 'superflares'. Two scientists say our sun could also be a superflare star.