sun
Scientists are much better at predicting when the Sun is going to become more active
The sun constantly cycles between periods of activity and periods of inactivity, and a new technique allows scientists to better…
The Solar System Might Not Exist if There Wasn’t a Huge Galactic Collision with the Milky Way Billions of Years Ago
The Milky Way has a number of satellite galaxies; nearly 60 of them, depedending on how we define them. One…
The heliosphere looks a lot weirder than we originally thought
Every second of every day, our sun spits out a stream of tiny high-energy particles, known as the solar wind.…
Destructive Super Solar Storms Hit Us Every 25 Years Or So
Solar storms powerful enough to wreak havoc on electronic equipment strike Earth every 25 years, according to a new study.…
Satellites Watched Mercury’s Transit From Space, Confirming That Yes, the Sun Has At Least One Planet
Do you wonder how astronomers find all those exoplanets orbiting stars in distant solar systems? Mostly they use the transit…
Power Grids and Satellites Are More at Risk from Extreme Solar Storms Than We Thought
Exactly how dangerous are solar storms? Scientists think the Carrington Event was one of the most powerful ones to ever…
This Star Has Reached the End of its Life
About 10,000 light years away, in the constellation Centaurus, is a planetary nebula called NGC 5307. A planetary nebula is…
When it Comes to Gamma Radiation, the Moon is Actually Brighter Than the Sun
The eerie, hellish glow coming from the Moon may seem unreal in this image, since it's invisible to our eyes.…
How The Sun’s Scorching Corona Stays So Hot
We've got a mystery on our hands. The surface of the sun has a temperature of about 6,000 Kelvin -…
When Does the Sun Rise… Really?
It's strange but true... we may not fully understand one of the simplest metrics in observational astronomy: just what time…