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.

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Display # 
Title Created Date Hits
How does the Moon stay "suspended" in the air? (Intermediate) Apr 05 141640
Would the biggest airplanes cause tsunamis if they crashed? (Intermediate) Feb 05 52516
Do we really observe the edges of galaxies at different epochs? (Advanced) Oct 04 48524
Do the Sun's or Earth's magnetic field reverse? (Intermediate) Jan 04 65273
When are there 5 Sundays in February? (Intermediate) Jan 04 67172
Are names given to black holes? (Advanced) Dec 03 89310
How can we find galaxies behind the Milky Way? (Intermediate) Sep 03 82307
Can I communicate faster than light? (Advanced) Aug 03 71921
Is there such a thing as hyperspace? (Intermediate) May 03 51435
How do we know that sunspots are associated with the Sun's magnetic field? (Intermediate) Apr 03 56456
Does inflation allow for an infinite number of universes? (Advanced) Apr 03 45962
What is the origin of the stellar classification system "OBAFGKM"? (Intermediate) Mar 03 67740
How are planets affected by the Hot Ionised Medium? (Advanced) Mar 03 37452
Why don't people walk upside-down on the bottom of the Earth? (Beginner) Mar 03 169032
How long has humanity known that we live in a galaxy similar to others in the Universe? (Intermediate) Feb 03 45977
How are galaxy distances inferred from their recessional velocities? (Intermediate) Jan 03 71123
Did I really hear a meteor? (Intermediate) Jan 03 55010
Do we have to worry about relativity when studying galactic objects? (Intermediate) Jan 03 42147
Does the temperature of matter increase as it is accelerated to relativistic speeds? (Advanced) Dec 02 50500
How do sunrise and sunset times change with altitude? (Intermediate) Nov 02 95069
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) Nov 02 54763
Can we look back far enough in time to see the Big Bang? (Beginner) Nov 02 96985
How can the Universe expand faster than the speed of light during inflation? (Advanced) Nov 02 129589
Why is pressure broadening greater in low mass stars than in high mass stars? (Advanced) Nov 02 43133
Why is sea water salty, and not lake water? (Beginner) Nov 02 82601
How many moles of stars are in the known universe? (Beginner) Oct 02 62068
Do binary or triple star systems form together? (Intermediate) Oct 02 45123
Why doesn't dark matter fall into a black hole? (Advanced) Oct 02 73771
Where does the kinetic energy of infalling bodies come from? (Intermediate) Oct 02 46667
Can astronomers observe anything when the moon is full? (Beginner) Oct 02 46072
Is there a beginning and an end to a galaxy's life? (Intermediate) Oct 02 78017
What was that really big falling star that I saw? (Intermediate) Oct 02 62148
How do you calculate the azimuth and altitude of an object? (Intermediate) Oct 02 115706
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 124297
Why are the Moon and Sun sometimes orange or red? (Beginner) Sep 02 436553
What is the origin of spiral structure in galaxies? (Intermediate) Sep 02 89429
Why does the Sun appear larger on the horizon than overhead? (Intermediate) Sep 02 114743
Can I see details on Venus? (Intermediate) Sep 02 60158
Do the magnitudes and colors of stars ever change? (Intermediate) Sep 02 57968
Why was the Platonic year named after Plato? (Intermediate) Aug 02 51707
Can I calculate the size of the Universe by converting light years to kilometres? (Intermediate) Aug 02 79147
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Aug 02 66016
Why do photos of space taken from space never show any stars? (Intermediate) Aug 02 71457
Is the Earth at the centre of the Universe? (Intermediate) Aug 02 78242
How can a star burn with no oxygen? (Beginner) Jul 02 238320
How are galaxies and solar systems similar? (Advanced) Jul 02 67302
Do supermassive black holes cause galaxy rotation? (Advanced) Jul 02 107418
What causes a particle to decay? (Intermediate) Jul 02 52282
Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate) Jul 02 93813
Why do pictures of distant galaxies have higher resolution than those of nearby planets? (Intermediate) Jun 02 70265
How is the Cepheid yardstick validated? (Advanced) Jun 02 49993
What would happen if you went back in time and killed your grandmother? (Beginner) Jun 02 49105
What colors are visible through an amateur telescope? (Intermediate) Jun 02 63174
What elements make up the Sun? (Beginner) Jun 02 185423
Is it possible to measure the temperature of the Sun? (Beginner) May 02 148367

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