Physical Cosmology
Learn the answers to questions about physical cosmology - the study of the origin and evolution of the universe.
Learn the answers to questions about physical cosmology - the study of the origin and evolution of the universe. Less
Does the size of a star determine the size of its habitable zone?
-
TRANSCRIPT: So a star that's smaller than the sun is going to be cooler than the sun. It has less...
Dr. Gerard van Belle
Astronomer, Lowell Observatory
How can astronomers claim to find planets in a star's 'habitable zone'?
-
TRANSCRIPT: So when astronomers claim to discover a planet that's 600, 700 light years away and...
Dr. Gerard van Belle
Astronomer, Lowell Observatory
When were the first exoplanets discovered?
-
TRANSCRIPT: 1995 was the -- well, 1992, '93 was -- they found some small things, Earth-mass...
Dr. Gerard van Belle
Astronomer, Lowell Observatory
How has the discovery of exoplanets changed astronomy?
-
TRANSCRIPT: The other thing that I think has -- how it has changed astronomy is that it has...
Dr. Gerard van Belle
Astronomer, Lowell Observatory
What is your favorite part of being an astronomer?
-
TRANSCRIPT: That what I just alluded to a few minutes ago: seeing something for the first time...
Dr. Lisa Prato
Astronomer, Lowell Observatory
What have been some of the biggest recent surprises in astronomy?
-
TRANSCRIPT: It was in 2006 that some papers began to appear in the literature suggesting that the...
Dr. Jeff Hall
Astronomer, Director, Lowell Observatory
How do scientists find planets outside our solar system?
-
Scientists use two methods to chart planets outside our solar system, called exoplanets. In the...
Discovery Channel
Site Director, Curiosity.com
and 1 other
