The Space Thread

Previously, researchers have detected magnetic fields on exoplanets similar in size to Jupiter, the largest planet in our solar system. But finding magnetic fields on smaller planets the size of Earth is more difficult because magnetic fields are essentially invisible.

“We’re looking for planets that are really close to their stars and are a similar size to Earth,” she said. “These planets are way too close to their stars to be somewhere you could live, but because they are so close the planet is kind of plowing through a bunch of stuff coming off the star. If the planet has a magnetic field and it plows through enough star stuff, it will cause the star to emit bright radio waves.”

Cool.
 
  • Like
Reactions: Gomez Adams
Check out Pluto Time. I ran across this about two or three years ago and still tell people about it when the lighting is close.


Here’s the basic idea: Pluto is 3.6 billion million miles away from the sun, which is about 40 times the distance of Earth to the sun. Obviously, the amount of light that reaches Pluto is far less than what reaches Earth. After traveling about five and a half hours, at the brightest point in Pluto’s day, the sun’s light is about 1/900th the intensity that it is on Earth.

But that doesn’t mean the planet is totally dark. While it may be a fraction of the brightness of an Earth day, it’s still 300 times brighter than the light from Earth’s moon. You’d probably have no trouble reading on Pluto at noon (unless, of course, you take your space helmet off).

The thing is, you don’t have to imagine what this amount of light is actually like, since you likely live it twice a day. Every day, just before sunrise, and just before sunset, the little light we receive from the sun is the same amount of light as a Pluto day at noon. NASA appropriately calls it “Pluto Time.”


 
  • Love
Reactions: Gomez Adams
An aurora doesn't have to be over head to see it. I've seen quite a few many miles south of where they were due to the height they occur at.
With a reading of 8 atm. you may be well on your way to see red on the upper northern horizen
 
  • Like
Reactions: Gomez Adams