This is NASA's Laboratory for High Energy Astrophysics (LHEA)
"Ask an Astrophysicist" web site. As the name
suggests, we specialize in High Energy Astrophysics. This deals
with the X-ray, Gamma-ray and Cosmic Ray universe;
and covers topics such as black holes, quasars and dark matter.
We attempt to answer as many questions as possible, but because of the
volume of email we receive, we are unfortunately often unable to answer
all of them. |
We will not respond to questions whose answers may be found in our archive or
on our site, or questions unrelated to high energy astrophysics.
- We do not accept more than 1 question per email and no more than
1 question per week from an individual user.
- Educators, please see Special Guidelines
- It usually takes 1-2 weeks for our volunteers to answer
Which topic area are you interested in?
(Please select one)
Please note that topic links with
take you to an
archive of questions & answers and other resources, but will not allow you to
submit new questions.
Not sure where your question fits in? If so,
If your question does not fall onto one of the above areas,
it means we are not the appropriate resource for your question.
- Read an explanation of these
- Or type a key word or phrase into our
LIBRARY SEARCH ENGINE --- your question
may already have been answered on our site.