sun

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…

2 years ago

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.…

2 years ago

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.…

2 years ago

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…

2 years ago

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…

2 years ago

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…

2 years ago

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.…

2 years ago

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 -…

3 years ago

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…

3 years ago

Here’s the First Image of the Sun from the Parker Solar Probe

It's been 124 days since the Parker Solar Probe was launched, and several weeks since it made the closest approach…

3 years ago