Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Between the Galaxies
Name: bryan matthewkarp
Status: N/A
Age: N/A
Location: N/A
Country: N/A
Date: 1993 - 1999


Question:
What if any thing is in between galaxies, besides space? How much cooler are sunspotsthan the actual surface of the sun? Why is the sky sometimes green? How are satellites named?


Replies:
"empty" space between galaxies (extra-galactic space) actually contains about one hydrogen atom per cubic meter. Inter-galactic space contains about one hydrogen atom per cubic cm.

The surface temperature of the sun is 5770 deg. Kelvin; sunspots are about (?) 1000 degrees cooler. the sun's photosphere (higher up in the sun's atmosphere) can get to over 10 million degrees!

John



Click here to return to the Astronomy Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory
n b