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 email: 

Kristine's websites: 
http://www.astro.queensu.ca/people/Kristine_Spekkens/main.php
http://www.rmc.ca/aca/phy/per/spekkens-k-eng.php

Display # 
Title Created Date Hits
How does the Moon stay "suspended" in the air? (Intermediate) Apr 05 166562
Would the biggest airplanes cause tsunamis if they crashed? (Intermediate) Feb 05 59417
Do we really observe the edges of galaxies at different epochs? (Advanced) Oct 04 58202
Do the Sun's or Earth's magnetic field reverse? (Intermediate) Jan 04 73557
When are there 5 Sundays in February? (Intermediate) Jan 04 80065
Are names given to black holes? (Advanced) Dec 03 99068
How can we find galaxies behind the Milky Way? (Intermediate) Sep 03 90708
Can I communicate faster than light? (Advanced) Aug 03 81518
Is there such a thing as hyperspace? (Intermediate) May 03 58657
How do we know that sunspots are associated with the Sun's magnetic field? (Intermediate) Apr 03 65579
Does inflation allow for an infinite number of universes? (Advanced) Apr 03 53034
What is the origin of the stellar classification system "OBAFGKM"? (Intermediate) Mar 03 79406
How are planets affected by the Hot Ionised Medium? (Advanced) Mar 03 43198
Why don't people walk upside-down on the bottom of the Earth? (Beginner) Mar 03 212094
How long has humanity known that we live in a galaxy similar to others in the Universe? (Intermediate) Feb 03 53816
How are galaxy distances inferred from their recessional velocities? (Intermediate) Jan 03 85200
Did I really hear a meteor? (Intermediate) Jan 03 63609
Do we have to worry about relativity when studying galactic objects? (Intermediate) Jan 03 49234
Does the temperature of matter increase as it is accelerated to relativistic speeds? (Advanced) Dec 02 59433
How do sunrise and sunset times change with altitude? (Intermediate) Nov 02 113527
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) Nov 02 63866
Can we look back far enough in time to see the Big Bang? (Beginner) Nov 02 112934
How can the Universe expand faster than the speed of light during inflation? (Advanced) Nov 02 145764
Why is pressure broadening greater in low mass stars than in high mass stars? (Advanced) Nov 02 49864
Why is sea water salty, and not lake water? (Beginner) Nov 02 97911
How many moles of stars are in the known universe? (Beginner) Oct 02 71021
Do binary or triple star systems form together? (Intermediate) Oct 02 53650
Why doesn't dark matter fall into a black hole? (Advanced) Oct 02 81481
Where does the kinetic energy of infalling bodies come from? (Intermediate) Oct 02 52778
Can astronomers observe anything when the moon is full? (Beginner) Oct 02 53289
Is there a beginning and an end to a galaxy's life? (Intermediate) Oct 02 89090
What was that really big falling star that I saw? (Intermediate) Oct 02 70146
How do you calculate the azimuth and altitude of an object? (Intermediate) Oct 02 129323
Is the Moon seen as a crescent (and not a "boat") all over the world? Is the same phase of the moon visible from the Northern and Southern hemispheres? (Advanced) Oct 02 143464
Why are the Moon and Sun sometimes orange or red? (Beginner) Sep 02 501719
What is the origin of spiral structure in galaxies? (Intermediate) Sep 02 98135
Why does the Sun appear larger on the horizon than overhead? (Intermediate) Sep 02 134221
Can I see details on Venus? (Intermediate) Sep 02 68837
Do the magnitudes and colors of stars ever change? (Intermediate) Sep 02 67023
Why was the Platonic year named after Plato? (Intermediate) Aug 02 60428
Can I calculate the size of the Universe by converting light years to kilometres? (Intermediate) Aug 02 88864
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Aug 02 73605
Why do photos of space taken from space never show any stars? (Intermediate) Aug 02 84020
Is the Earth at the centre of the Universe? (Intermediate) Aug 02 98343
How can a star burn with no oxygen? (Beginner) Jul 02 288134
How are galaxies and solar systems similar? (Advanced) Jul 02 77607
Do supermassive black holes cause galaxy rotation? (Advanced) Jul 02 121718
What causes a particle to decay? (Intermediate) Jul 02 63645
Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate) Jul 02 112599
Why do pictures of distant galaxies have higher resolution than those of nearby planets? (Intermediate) Jun 02 79010
How is the Cepheid yardstick validated? (Advanced) Jun 02 58019
What would happen if you went back in time and killed your grandmother? (Beginner) Jun 02 57552
What colors are visible through an amateur telescope? (Intermediate) Jun 02 71528
What elements make up the Sun? (Beginner) Jun 02 212930
Is it possible to measure the temperature of the Sun? (Beginner) May 02 174732

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