Answers to Space Science Questions

As a radio amateur, I know that trying to get a signal very far away is hard unless the conditions are exactly right....

New Horizons is supposed to be the fastest spacecraft yet. I'm wondering when it will surpass the Voyagers as the...

I have question about asteroids. If someone was to land on one, would they have to hold on like if they were on the...

If it takes huge dishes to send signals into space, how do things like Venus or Mars rovers send their signals back...

Down here in Puerto Rico we're supposed to have the largest radio telescope in the world. Is that true, and in...

Do asteroids have a maximum speed or do they keep accelerating?

I look out of my window and see something that appears to be a satellite. It rises in the sky through the night. It...

I want to whether the analysis of the Stardust comet dust can tell us about the origins of the universe and the theory...

Was the Star of Bethlehem a real astronomical event?

Is it true that someone's head would explode if you went out into space without a helmet on?

We're told that photons can't escape from a black hole, and I was wondering if gravitons can escape from a...

How far is the nearest galaxy?

How do scientists check the distances between planets, and how accurate are their methods?

How do scientists measure the life of the sun?

How many human years are there in a light year?

Is it possible to see a gamma ray burst in the sky? I saw something in the sky flash on and off one night.

You talked in the past about dropping an object down a tunnel that's been drilled right through the earth. I'...

Where do people get all the information for the movies, and how do you know that aliens are really real?

In 1993 or 1994 during the darkest part of winter, I went outside and looked up. The sky was quite clear and there was...

I've seen a UFO. It was 1959 from a block of flats in Hoburn. It was solid and looked like chrome and was 100 foot...

On the day of the Rendlesham incident, I was in Beeston and it was a terrible snowy day. I took my dogs for a walk and...

I've had two sightings. The first one was big like an orange, and it was moving very sharply. It kept moving...

Why is the sun so hot?

Why does it get darker earlier in the winter than it does in the summer?