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EarthSky Voices

What’s on the far side of the moon?

The far side of the moon sees its share of sunlight. With all due respect to Pink Floyd, the moon's far side is dark only in the sense that it's mysterious. Here's why.

When is dead really dead?

A recent study of pigs' brains suggested some activity could be restored even after they'd been dead 4 hours, reinforcing the idea that death is a process. A neuroscientist explains.

Does a year in space make you older or younger?

The NASA Twins study - featuring astronaut twins Scott and Mark Kelly - was the perfect space experiment. Scott spent a year in space aboard the International Space Station. Mark remained on Earth. The results?

Black hole image confirms Einstein’s relativity theory

Einstein's theory was confirmed in 1919, when British astronomer Sir Arthur Eddington measured the bending of starlight around the sun during a total solar eclipse. And it's been re-confirmed since. How about now?

Alaska’s mountain glaciers: A 10-year story

Glaciers in Alaska are losing ice and contributing to sea level rise. To monitor these changes, a team of researchers has been flying scientific instruments on a bright red, single-engine plane since spring 2009.

2018 global CO2 growth 4th highest on record

According to NOAA data, global growth in atmospheric carbon dioxide (CO2) in 2018 was the 4th-highest in 60 years of record-keeping.

What’s going on with Jupiter’s Red Spot?

This giant storm has remained a nearly constant feature of Jupiter's turbulent atmosphere for at least 300 years. How can a storm persist for so long?

Do you have a magnetic compass in your head?

New evidence suggests that humans have a magnetic sense that lets our brains detect and respond to Earth's magnetic field.

Mining the moon

How can the cost of space travel – to and from the moon and possibly to Mars - be reduced? One approach is to mine the moon for necessary resources.

Jupiter or Earth?

Swirls in Jupiter’s atmosphere and in Earth’s Baltic Sea look a lot alike. That's because the motion of fluids on both planets are governed by same laws of physics.

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