Ask an Astronomer Team

Sara Slater

Sara is a former Cornell undergraduate and now a physics graduate student at Harvard University, where she works on cosmology and particle physics.

Display # 
Title Created Date Hits
What is the photoelectric effect? Why can't multiple low-frequency photons free an electron? (Intermediate) Jun 05 50218
What is the SU(3) quark model? (Intermediate) Jan 05 47801
What happens to spacetime inside a black hole? (Intermediate) Jan 05 120385
How does melting a material reset its radioactive clock? (Intermediate) Sep 04 47636
Where did the matter in the universe come from? (Intermediate) Jul 04 192429
How do we know the Milky Way is a spiral galaxy? (Intermediate) Jun 04 124205
What causes gamma ray bursts? (Intermediate) Jan 04 62150
Can superheavy elements (such as Z=116 or 118) be formed in a supernova? Can we observe them? (Advanced) Jan 04 64977
What do a galaxy's colors mean? Are they its true colors? (Intermediate) Aug 03 169271
How does a star take mass from another star? (Intermediate) Aug 03 49022
What is our galaxy's halo made of, and how was it formed? (Intermediate) Aug 03 67029
Did I see the Aurora Borealis as a child? (Beginner) Jul 03 64725
Does the Coriolis force determine which way my toilet drains? Does it affect black holes? (Beginner) Apr 03 65584
What would happen to us if the sun went out for an hour? (Beginner) Apr 03 121071
What is "nothing", from a scientific point of view? (Beginner) Apr 03 51855
Do similar laws of physics throughout the Universe imply that all life must be like life on Earth? (Beginner) Apr 03 55533
Can I see a quasar? (Intermediate) Mar 03 59841
Why do planets have elliptical orbits? (Beginner) Feb 03 304477

Most Popular

Our Reddit AMAs

AMA = Ask Me (Us) Anything