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 128123
Would the biggest airplanes cause tsunamis if they crashed? (Intermediate) Feb 05 47983
Do we really observe the edges of galaxies at different epochs? (Advanced) Oct 04 42912
Do the Sun's or Earth's magnetic field reverse? (Intermediate) Jan 04 60129
When are there 5 Sundays in February? (Intermediate) Jan 04 60647
Are names given to black holes? (Advanced) Dec 03 82459
How can we find galaxies behind the Milky Way? (Intermediate) Sep 03 77173
Can I communicate faster than light? (Advanced) Aug 03 65935
Is there such a thing as hyperspace? (Intermediate) May 03 46819
How do we know that sunspots are associated with the Sun's magnetic field? (Intermediate) Apr 03 50657
Does inflation allow for an infinite number of universes? (Advanced) Apr 03 41790
What is the origin of the stellar classification system "OBAFGKM"? (Intermediate) Mar 03 59542
How are planets affected by the Hot Ionised Medium? (Advanced) Mar 03 33494
Why don't people walk upside-down on the bottom of the Earth? (Beginner) Mar 03 142697
How long has humanity known that we live in a galaxy similar to others in the Universe? (Intermediate) Feb 03 41227
How are galaxy distances inferred from their recessional velocities? (Intermediate) Jan 03 62253
Did I really hear a meteor? (Intermediate) Jan 03 49941
Do we have to worry about relativity when studying galactic objects? (Intermediate) Jan 03 38125
Does the temperature of matter increase as it is accelerated to relativistic speeds? (Advanced) Dec 02 45067
How do sunrise and sunset times change with altitude? (Intermediate) Nov 02 81875
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda? (Advanced) Nov 02 49846
Can we look back far enough in time to see the Big Bang? (Beginner) Nov 02 87604
How can the Universe expand faster than the speed of light during inflation? (Advanced) Nov 02 118410
Why is pressure broadening greater in low mass stars than in high mass stars? (Advanced) Nov 02 38930
Why is sea water salty, and not lake water? (Beginner) Nov 02 72397
How many moles of stars are in the known universe? (Beginner) Oct 02 56768
Do binary or triple star systems form together? (Intermediate) Oct 02 40345
Why doesn't dark matter fall into a black hole? (Advanced) Oct 02 68268
Where does the kinetic energy of infalling bodies come from? (Intermediate) Oct 02 42737
Can astronomers observe anything when the moon is full? (Beginner) Oct 02 41778
Is there a beginning and an end to a galaxy's life? (Intermediate) Oct 02 71222
What was that really big falling star that I saw? (Intermediate) Oct 02 57101
How do you calculate the azimuth and altitude of an object? (Intermediate) Oct 02 104008
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 110921
Why are the Moon and Sun sometimes orange or red? (Beginner) Sep 02 380821
What is the origin of spiral structure in galaxies? (Intermediate) Sep 02 83916
Why does the Sun appear larger on the horizon than overhead? (Intermediate) Sep 02 100856
Can I see details on Venus? (Intermediate) Sep 02 54210
Do the magnitudes and colors of stars ever change? (Intermediate) Sep 02 52867
Why was the Platonic year named after Plato? (Intermediate) Aug 02 46647
Can I calculate the size of the Universe by converting light years to kilometres? (Intermediate) Aug 02 72554
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane? (Intermediate) Aug 02 61192
Why do photos of space taken from space never show any stars? (Intermediate) Aug 02 57423
Is the Earth at the centre of the Universe? (Intermediate) Aug 02 65428
How can a star burn with no oxygen? (Beginner) Jul 02 206074
How are galaxies and solar systems similar? (Advanced) Jul 02 60775
Do supermassive black holes cause galaxy rotation? (Advanced) Jul 02 97471
What causes a particle to decay? (Intermediate) Jul 02 45790
Who (and when) discovered that the earth's axis is on a 23 degree tilt? (Intermediate) Jul 02 83177
Why do pictures of distant galaxies have higher resolution than those of nearby planets? (Intermediate) Jun 02 64823
How is the Cepheid yardstick validated? (Advanced) Jun 02 45589
What would happen if you went back in time and killed your grandmother? (Beginner) Jun 02 43608
What colors are visible through an amateur telescope? (Intermediate) Jun 02 57149
What elements make up the Sun? (Beginner) Jun 02 167634
Is it possible to measure the temperature of the Sun? (Beginner) May 02 129325

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