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 159463
Would the biggest airplanes cause tsunamis if they crashed? (Intermediate) Feb 05 57869
Do we really observe the edges of galaxies at different epochs? (Advanced) Oct 04 55661
Do the Sun's or Earth's magnetic field reverse? (Intermediate) Jan 04 71495
When are there 5 Sundays in February? (Intermediate) Jan 04 76441
Are names given to black holes? (Advanced) Dec 03 96834
How can we find galaxies behind the Milky Way? (Intermediate) Sep 03 88774
Can I communicate faster than light? (Advanced) Aug 03 79024
Is there such a thing as hyperspace? (Intermediate) May 03 56913
How do we know that sunspots are associated with the Sun's magnetic field? (Intermediate) Apr 03 63434
Does inflation allow for an infinite number of universes? (Advanced) Apr 03 51426
What is the origin of the stellar classification system "OBAFGKM"? (Intermediate) Mar 03 76821
How are planets affected by the Hot Ionised Medium? (Advanced) Mar 03 41895
Why don't people walk upside-down on the bottom of the Earth? (Beginner) Mar 03 201008
How long has humanity known that we live in a galaxy similar to others in the Universe? (Intermediate) Feb 03 52061
How are galaxy distances inferred from their recessional velocities? (Intermediate) Jan 03 81180
Did I really hear a meteor? (Intermediate) Jan 03 61378
Do we have to worry about relativity when studying galactic objects? (Intermediate) Jan 03 47572
Does the temperature of matter increase as it is accelerated to relativistic speeds? (Advanced) Dec 02 57346
How do sunrise and sunset times change with altitude? (Intermediate) Nov 02 109011
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) Nov 02 61471
Can we look back far enough in time to see the Big Bang? (Beginner) Nov 02 108777
How can the Universe expand faster than the speed of light during inflation? (Advanced) Nov 02 142597
Why is pressure broadening greater in low mass stars than in high mass stars? (Advanced) Nov 02 48382
Why is sea water salty, and not lake water? (Beginner) Nov 02 93950
How many moles of stars are in the known universe? (Beginner) Oct 02 68905
Do binary or triple star systems form together? (Intermediate) Oct 02 51718
Why doesn't dark matter fall into a black hole? (Advanced) Oct 02 79798
Where does the kinetic energy of infalling bodies come from? (Intermediate) Oct 02 51355
Can astronomers observe anything when the moon is full? (Beginner) Oct 02 51579
Is there a beginning and an end to a galaxy's life? (Intermediate) Oct 02 86223
What was that really big falling star that I saw? (Intermediate) Oct 02 68181
How do you calculate the azimuth and altitude of an object? (Intermediate) Oct 02 126240
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 137784
Why are the Moon and Sun sometimes orange or red? (Beginner) Sep 02 487444
What is the origin of spiral structure in galaxies? (Intermediate) Sep 02 96201
Why does the Sun appear larger on the horizon than overhead? (Intermediate) Sep 02 129534
Can I see details on Venus? (Intermediate) Sep 02 66495
Do the magnitudes and colors of stars ever change? (Intermediate) Sep 02 64599
Why was the Platonic year named after Plato? (Intermediate) Aug 02 58238
Can I calculate the size of the Universe by converting light years to kilometres? (Intermediate) Aug 02 86585
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Aug 02 71851
Why do photos of space taken from space never show any stars? (Intermediate) Aug 02 81641
Is the Earth at the centre of the Universe? (Intermediate) Aug 02 93853
How can a star burn with no oxygen? (Beginner) Jul 02 275936
How are galaxies and solar systems similar? (Advanced) Jul 02 74983
Do supermassive black holes cause galaxy rotation? (Advanced) Jul 02 118177
What causes a particle to decay? (Intermediate) Jul 02 61029
Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate) Jul 02 107972
Why do pictures of distant galaxies have higher resolution than those of nearby planets? (Intermediate) Jun 02 76868
How is the Cepheid yardstick validated? (Advanced) Jun 02 56171
What would happen if you went back in time and killed your grandmother? (Beginner) Jun 02 55780
What colors are visible through an amateur telescope? (Intermediate) Jun 02 69596
What elements make up the Sun? (Beginner) Jun 02 206441
Is it possible to measure the temperature of the Sun? (Beginner) May 02 168522

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