Previously answered questions by Kristine Spekkens

(in order of times viewed)

Why are the Moon and Sun sometimes orange or red?
What elements make up the Sun?
Is it possible to measure the temperature of the Sun?
Are names given to black holes?
How can the Universe expand faster than the speed of light during inflation?
How does the Moon stay "suspended" in the air?
How do you calculate the azimuth and altitude of an object?
Can you fire a gun on the Moon?
Why do pictures of distant galaxies have higher resolution than those of nearby planets?
Can I calculate the size of the Universe by converting light years to kilometres?
Can we look back far enough in time to see the Big Bang?
What was that really big falling star that I saw?
Why doesn't dark matter fall into a black hole?
Why is sea water salty, and not lake water?
How can a star burn with no oxygen?
Do the Sun's or Earth's magnetic field reverse?
Do supermassive black holes cause galaxy rotation?
Is the Earth at the centre of the Universe?
Can I communicate faster than light?
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?
How many moles of stars are in the known universe?
How are galaxy distances inferred from their recessional velocities?
Why don't people walk upside-down on the bottom of the Earth?
How do we know what parameters to use when simulating the collision of the Milky Way and Andromeda?
Is there such a thing as hyperspace?
Why do photos of space taken from space never show any stars?
Can you use an infinite line of reflectors to send light to the edge of the Universe?
Do the magnitudes and colors of stars ever change?
Who (and when) discovered that the earth's axis is on a 23 degree tilt?
Why does the Sun appear larger on the horizon than overhead?
When are there 5 Sundays in February?
How are galaxies and solar systems similar?
What would happen if there was a collision between two white dwarfs?
Can two lunar eclipses occur in the same month?
How do we know that sunspots are associated with the Sun's magnetic field?
What colors are visible through an amateur telescope?
How do sunrise and sunset times change with altitude?
Can I see details on Venus?
Does inflation allow for an infinite number of universes?
Where does the kinetic energy of infalling bodies come from?
Did I really hear a meteor?
Would the biggest airplanes cause tsunamis if they crashed?
How is the Cepheid yardstick validated?
Why was the Platonic year named after Plato?
Is there a beginning and an end to a galaxy's life?
Why is pressure broadening greater in low mass stars than in high mass stars?
What is the origin of the stellar classification system "OBAFGKM"?
Can astronomers observe anything when the moon is full?
Can the acceleration of the Universe be analogous to apparent acceleration in a airplane?
How can we find galaxies behind the Milky Way?
Does the temperature of matter increase as it is accelerated to relativistic speeds?
How long has humanity known that we live in a galaxy similar to others in the Universe?
What causes a particle to decay?
Do we have to worry about relativity when studying galactic objects?
Do we really observe the edges of galaxies at different epochs?
Do binary or triple star systems form together?
What would happen if you went back in time and killed your grandmother?
How are planets affected by the Hot Ionised Medium?

URL: http://curious.astro.cornell.edu/authorlist.php?number=6
This page has been accessed 507420 times since September 25, 2002.
Last modified: November 19, 2007 11:28:35 AM

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