Ask an Astronomer Team
Kristine Spekkens
Kristine studies the dynamics of galaxies and what they can teach us about dark matter in the universe. She got her Ph.D from Cornell in August 2005, was a Jansky post-doctoral fellow at Rutgers University from 2005-2008, and is now a faculty member at the Royal Military College of Canada and at Queen's University.
Kristine's websites:
http://www.astro.queensu.ca/people/Kristine_Spekkens/main.php
http://www.rmc.ca/aca/phy/per/spekkens-k-eng.php
Most Recent
- Is speed of light the same everywhere ? (Beginner)
- How does Venus have sulphuric acid in it's clouds? (Beginner)
- Earth's Bow Shock (Advanced)
- How much does the Earth "wobble" on its orbit due to the Moon's gravity? (Intermediate)
- Why is the sun red? During sunset, Northeastern US, Summer 2021 (Beginner)
- Why do rays from Sun appear to converge at a point? (Beginner)
- But seriously: what was there before the Big Bang? (Beginner)
- How far can photons move freely in the early universe (Advanced)
- How likely is it that the Solar System has had or will have a close encounter with another star? (Intermediate)
- How do we know what we observe is x light years away? (Beginner)
Editor's Pick
- What is the universe expanding into? (Intermediate)
- What do I need to do to become an astronomer? (Beginner)
- What's the difference between astronomy and astrology? (Beginner)
- Why is looking out into space the same as looking back in time? (Beginner)
- Can we find the place where the Big Bang happened? (Intermediate)
Most Popular
- What was the bright, smoothly moving star that I saw? (Beginner)
- What is the size of the Solar System? (Intermediate)
- What is the best way to see the Milky Way? (Intermediate)
- Why do planets not twinkle? (Intermediate)
- Why do all the planets orbit in the same plane? (Intermediate)
- Why do the planets orbit the sun? (Beginner)
- What type of energy does a black hole have? (Intermediate)
- Which planet is most similar to Earth? (Intermediate)
- What direction do planets rotate? (Beginner)
- What would happen if the Moon fell out of its orbit around Earth? (Intermediate)
- Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
- How far is each planet from Earth? (Intermediate)
- What was the bright, smoothly moving star that I saw? (Beginner)
- Earth's Bow Shock (Advanced)
- What would happen if the Moon fell out of its orbit around Earth? (Intermediate)
- How do you measure the distance between Earth and the Sun? (Intermediate)
- Why do the planets orbit the sun? (Beginner)
- Which planet is most similar to Earth? (Intermediate)
- At what speed does the Earth move around the Sun? (Beginner)
- How are light and heavy elements formed? (Advanced)
- Are there telescopes that can see the flag and lunar rover on the Moon? (Beginner)
- How are light and heavy elements formed? (Advanced)
- Which planet is most similar to Earth? (Intermediate)
- How do you measure the distance between Earth and the Sun? (Intermediate)
- What was the bright, smoothly moving star that I saw? (Beginner)
- How far is each planet from Earth? (Intermediate)
- Why is the moon in a different place every night? (Beginner)
- How does the position of Moonrise and Moonset change? (Intermediate)
- What would happen if the Moon fell out of its orbit around Earth? (Intermediate)
- Earth's Bow Shock (Advanced)
- What's going to happen on December 21st 2012? (Intermediate)
- What color is each planet? (Intermediate)
- At what speed does the Earth move around the Sun? (Beginner)
- How far is each planet from Earth? (Intermediate)
- How do you measure the distance between Earth and the Sun? (Intermediate)
- Is the Moon moving away from the Earth? When was this discovered? (Intermediate)
- Why do the planets orbit the sun? (Beginner)
- What is the significance of the Tropic of Cancer, Tropic of Capricorn, Arctic Circle and Antarctic Circle? (Beginner)
- When was the last time all of the planets were aligned? (Beginner)
- How long does it take for the Sun's light to reach us? (Beginner)
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