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 144321
Would the biggest airplanes cause tsunamis if they crashed? (Intermediate) Feb 05 53200
Do we really observe the edges of galaxies at different epochs? (Advanced) Oct 04 49454
Do the Sun's or Earth's magnetic field reverse? (Intermediate) Jan 04 66187
When are there 5 Sundays in February? (Intermediate) Jan 04 68735
Are names given to black holes? (Advanced) Dec 03 90511
How can we find galaxies behind the Milky Way? (Intermediate) Sep 03 83279
Can I communicate faster than light? (Advanced) Aug 03 72990
Is there such a thing as hyperspace? (Intermediate) May 03 52133
How do we know that sunspots are associated with the Sun's magnetic field? (Intermediate) Apr 03 57408
Does inflation allow for an infinite number of universes? (Advanced) Apr 03 46682
What is the origin of the stellar classification system "OBAFGKM"? (Intermediate) Mar 03 68940
How are planets affected by the Hot Ionised Medium? (Advanced) Mar 03 38025
Why don't people walk upside-down on the bottom of the Earth? (Beginner) Mar 03 173351
How long has humanity known that we live in a galaxy similar to others in the Universe? (Intermediate) Feb 03 46848
How are galaxy distances inferred from their recessional velocities? (Intermediate) Jan 03 72042
Did I really hear a meteor? (Intermediate) Jan 03 55743
Do we have to worry about relativity when studying galactic objects? (Intermediate) Jan 03 42928
Does the temperature of matter increase as it is accelerated to relativistic speeds? (Advanced) Dec 02 51439
How do sunrise and sunset times change with altitude? (Intermediate) Nov 02 96577
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) Nov 02 55677
Can we look back far enough in time to see the Big Bang? (Beginner) Nov 02 98680
How can the Universe expand faster than the speed of light during inflation? (Advanced) Nov 02 131532
Why is pressure broadening greater in low mass stars than in high mass stars? (Advanced) Nov 02 43754
Why is sea water salty, and not lake water? (Beginner) Nov 02 84039
How many moles of stars are in the known universe? (Beginner) Oct 02 63037
Do binary or triple star systems form together? (Intermediate) Oct 02 45974
Why doesn't dark matter fall into a black hole? (Advanced) Oct 02 74452
Where does the kinetic energy of infalling bodies come from? (Intermediate) Oct 02 47230
Can astronomers observe anything when the moon is full? (Beginner) Oct 02 46866
Is there a beginning and an end to a galaxy's life? (Intermediate) Oct 02 79125
What was that really big falling star that I saw? (Intermediate) Oct 02 62737
How do you calculate the azimuth and altitude of an object? (Intermediate) Oct 02 117016
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 126662
Why are the Moon and Sun sometimes orange or red? (Beginner) Sep 02 442156
What is the origin of spiral structure in galaxies? (Intermediate) Sep 02 90351
Why does the Sun appear larger on the horizon than overhead? (Intermediate) Sep 02 117225
Can I see details on Venus? (Intermediate) Sep 02 61027
Do the magnitudes and colors of stars ever change? (Intermediate) Sep 02 58911
Why was the Platonic year named after Plato? (Intermediate) Aug 02 52594
Can I calculate the size of the Universe by converting light years to kilometres? (Intermediate) Aug 02 80157
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Aug 02 66811
Why do photos of space taken from space never show any stars? (Intermediate) Aug 02 73048
Is the Earth at the centre of the Universe? (Intermediate) Aug 02 81452
How can a star burn with no oxygen? (Beginner) Jul 02 243540
How are galaxies and solar systems similar? (Advanced) Jul 02 68382
Do supermassive black holes cause galaxy rotation? (Advanced) Jul 02 108651
What causes a particle to decay? (Intermediate) Jul 02 53419
Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate) Jul 02 95553
Why do pictures of distant galaxies have higher resolution than those of nearby planets? (Intermediate) Jun 02 71133
How is the Cepheid yardstick validated? (Advanced) Jun 02 50866
What would happen if you went back in time and killed your grandmother? (Beginner) Jun 02 49967
What colors are visible through an amateur telescope? (Intermediate) Jun 02 64037
What elements make up the Sun? (Beginner) Jun 02 188498
Is it possible to measure the temperature of the Sun? (Beginner) May 02 151283

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