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 Sun Fuel
Name: John
Status: Other
Age: N/A
Location: N/A
Country: N/A
Date: N/A 


Question:
Where does the Sun get its fuel?



Replies:
The Sun runs on hydrogen, which is what it is made of - it is very gradually consuming itself! Because the fusion reactions it uses create so much energy, the Sun will continue to shine for a long time - probably another 5 billion years. The fusion (converting hydrogen into helium) occurs only in the very deepest part of the Sun, which is extremely hot (millions of degrees), and this heat gradually filters out to the outer layers which are only a few thousand degrees, and this heat is then radiated into space as light.

A Smith



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