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

URL: http://curious.astro.cornell.edu/authorlist.php?number=6
This page has been accessed 10029 times since January 14, 2013.
Last modified: November 19, 2007 11:28:35 AM

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