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 53740
What is the SU(3) quark model? (Intermediate) Jan 05 51118
What happens to spacetime inside a black hole? (Intermediate) Jan 05 127947
How does melting a material reset its radioactive clock? (Intermediate) Sep 04 50968
Where did the matter in the universe come from? (Intermediate) Jul 04 204225
How do we know the Milky Way is a spiral galaxy? (Intermediate) Jun 04 134240
What causes gamma ray bursts? (Intermediate) Jan 04 65803
Can superheavy elements (such as Z=116 or 118) be formed in a supernova? Can we observe them? (Advanced) Jan 04 68214
What do a galaxy's colors mean? Are they its true colors? (Intermediate) Aug 03 180854
How does a star take mass from another star? (Intermediate) Aug 03 52255
What is our galaxy's halo made of, and how was it formed? (Intermediate) Aug 03 70661
Did I see the Aurora Borealis as a child? (Beginner) Jul 03 68582
Does the Coriolis force determine which way my toilet drains? Does it affect black holes? (Beginner) Apr 03 68327
What would happen to us if the sun went out for an hour? (Beginner) Apr 03 125426
What is "nothing", from a scientific point of view? (Beginner) Apr 03 54772
Do similar laws of physics throughout the Universe imply that all life must be like life on Earth? (Beginner) Apr 03 58332
Can I see a quasar? (Intermediate) Mar 03 62648
Why do planets have elliptical orbits? (Beginner) Feb 03 324381

Most Popular


Our Reddit AMAs

AMA = Ask Me (Us) Anything