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 154221
Would the biggest airplanes cause tsunamis if they crashed? (Intermediate) Feb 05 56823
Do we really observe the edges of galaxies at different epochs? (Advanced) Oct 04 54129
Do the Sun's or Earth's magnetic field reverse? (Intermediate) Jan 04 70237
When are there 5 Sundays in February? (Intermediate) Jan 04 74082
Are names given to black holes? (Advanced) Dec 03 95230
How can we find galaxies behind the Milky Way? (Intermediate) Sep 03 87517
Can I communicate faster than light? (Advanced) Aug 03 77545
Is there such a thing as hyperspace? (Intermediate) May 03 55809
How do we know that sunspots are associated with the Sun's magnetic field? (Intermediate) Apr 03 61909
Does inflation allow for an infinite number of universes? (Advanced) Apr 03 50316
What is the origin of the stellar classification system "OBAFGKM"? (Intermediate) Mar 03 74873
How are planets affected by the Hot Ionised Medium? (Advanced) Mar 03 40997
Why don't people walk upside-down on the bottom of the Earth? (Beginner) Mar 03 192962
How long has humanity known that we live in a galaxy similar to others in the Universe? (Intermediate) Feb 03 50710
How are galaxy distances inferred from their recessional velocities? (Intermediate) Jan 03 78819
Did I really hear a meteor? (Intermediate) Jan 03 59788
Do we have to worry about relativity when studying galactic objects? (Intermediate) Jan 03 46482
Does the temperature of matter increase as it is accelerated to relativistic speeds? (Advanced) Dec 02 55815
How do sunrise and sunset times change with altitude? (Intermediate) Nov 02 105775
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) Nov 02 60049
Can we look back far enough in time to see the Big Bang? (Beginner) Nov 02 106030
How can the Universe expand faster than the speed of light during inflation? (Advanced) Nov 02 140122
Why is pressure broadening greater in low mass stars than in high mass stars? (Advanced) Nov 02 47268
Why is sea water salty, and not lake water? (Beginner) Nov 02 91239
How many moles of stars are in the known universe? (Beginner) Oct 02 67480
Do binary or triple star systems form together? (Intermediate) Oct 02 49800
Why doesn't dark matter fall into a black hole? (Advanced) Oct 02 78531
Where does the kinetic energy of infalling bodies come from? (Intermediate) Oct 02 50306
Can astronomers observe anything when the moon is full? (Beginner) Oct 02 50446
Is there a beginning and an end to a galaxy's life? (Intermediate) Oct 02 84369
What was that really big falling star that I saw? (Intermediate) Oct 02 66594
How do you calculate the azimuth and altitude of an object? (Intermediate) Oct 02 123697
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 134691
Why are the Moon and Sun sometimes orange or red? (Beginner) Sep 02 477177
What is the origin of spiral structure in galaxies? (Intermediate) Sep 02 94933
Why does the Sun appear larger on the horizon than overhead? (Intermediate) Sep 02 126006
Can I see details on Venus? (Intermediate) Sep 02 65197
Do the magnitudes and colors of stars ever change? (Intermediate) Sep 02 63160
Why was the Platonic year named after Plato? (Intermediate) Aug 02 56665
Can I calculate the size of the Universe by converting light years to kilometres? (Intermediate) Aug 02 84934
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Aug 02 70597
Why do photos of space taken from space never show any stars? (Intermediate) Aug 02 79613
Is the Earth at the centre of the Universe? (Intermediate) Aug 02 90874
How can a star burn with no oxygen? (Beginner) Jul 02 266945
How are galaxies and solar systems similar? (Advanced) Jul 02 73294
Do supermassive black holes cause galaxy rotation? (Advanced) Jul 02 115633
What causes a particle to decay? (Intermediate) Jul 02 59045
Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate) Jul 02 103659
Why do pictures of distant galaxies have higher resolution than those of nearby planets? (Intermediate) Jun 02 75354
How is the Cepheid yardstick validated? (Advanced) Jun 02 54611
What would happen if you went back in time and killed your grandmother? (Beginner) Jun 02 54510
What colors are visible through an amateur telescope? (Intermediate) Jun 02 68290
What elements make up the Sun? (Beginner) Jun 02 200009
Is it possible to measure the temperature of the Sun? (Beginner) May 02 163684

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