Mars Dried Out Because Its Magnetic Field Is So Weak
Mars once had oceans, but its magnetic field just wasn't strong enough to keep the atmosphere - and most of the water - from blowing away.
How did Mars go from wet to dry?
NASA's MAVEN probe says: blame the sun and a wimpy magnetic field. (Video via NASA)
When solar flares erupt, high-energy particles batter the planets. (Video via NASA)
Earth's powerful magnetic field shields the atmosphere. But with its weak field, Mars takes the full brunt. (Video via NASA)
So the atmosphere blew away and so did most of the water. (Video via NASA)
This video includes images from NASA.
Northern lights observed and could continue into the weekend
A coronal hole high-speed stream caused the northern lights to be visible in parts of the U.S., but could cause some issues with the power grid.
When you'll be able to see 5 planets align in the night sky
Five planets — Jupiter, Mercury, Venus, Uranus and Mars — will align on the evening of March 28.
Where 2 upcoming solar eclipses can be seen in the US
New NASA maps show who will have the best view of two major solar eclipse events in the next 13 months.
'John Wick: Chapter 4' opens with franchise-record $73.5 million
This latest chapter also has the highest critics' score on Rotten Tomatoes, a whopping 95%.
Alternative Schools: Growing in popularity, increased student success
When you hear the phrase ‘alternative school,’ what do you think of?
Mississippi Tornado: A family grieves the loss of a loved one
In the small town of Rolling Fork, Mississippi, residents say this was all like a bad dream.