Enjoying EarthSky? Subscribe.

266,166 subscribers and counting ...

EarthSky Voices

Do dolphins get Alzheimer’s disease?

In many ways, dolphin brains are a lot like human brains. Researchers report on pathological signs of Alzheimer’s in these awesome creatures.

Venezuela is losing its last glacier

Venezuela’s last glacier is about to disappear, making it the first country in modern history to lose all of its glaciers.

5 discoveries we owe to twins

Years of twin research have led to incredible insights into how our genes and the environment affect our health.

Is daylight saving time worth the trouble?

Advocates say daylight time saves energy and wins wars. But studies show injuries and illnesses rise when clocks change.

What is dark matter?

Cosmologists are heading back to their chalkboards, as experiments designed to figure out the nature of dark matter come up empty.

How the universe creates gold

Finally, scientists know how the universe makes gold. They’ve seen it created in the cosmic fire of 2 colliding stars via the gravitational wave they emitted.

Pluto: Preparing for the perfect alignment

Pluto will cross the plane of the ecliptic – the Earth-sun plane – in 2018. This hasn’t happened since 1931, near the time of the Pluto’s discovery. Astronomers are getting ready!

What are gravitational waves?

If you understand how a trampoline works, you’ll be able to understand what gravitational waves are.

How gravitational waves attracted a Nobel Prize

The 2017 Nobel prize for physics was awarded to scientists who helped pioneer the discovery of ripples in the fabric of spacetime, known as gravitational waves. 

Nobel winners shed light on circadian rhythms

Three American scientists share the 2017 Nobel Prize in Physiology or Medicine for work that explained how our cells keep track of time.