# Science

Why has it taken astronomers so long to discover the planet QUAOAR?

Space is huge. The object is dim. Under high magnification, even a small amount of space takes a very long time to scan. Plus the object is moving so it's in a different place. That's one way such objects can be identified (they move in relation to the fixed stars on photographs). Note in the article below it was photographed in the 1950's.

http://en.wikipedia.org/wiki/50000_Quaoar

Thankyou very much lance.

1. 👍
2. 👎
3. 👁

## Similar Questions

1. ### Physics-forces

1. NASA launched a 550kg satellite into space. Its engines have a thrust of 8000N. a) What is the downward froce of gravity acting on the rocket at blast off? (is it 5390N?) b) What is the acceleration of the rocket at blast-off?

2. ### Science

Can someone please please help me? I don't have a text book, i have a online book and it isn't working. Can someone please be nice and help me? Science isn't my subject! 1. Why is Earth’s temperature just right for life? (1

3. ### Physics

Calculate the work done by planet X on its moon. Planet X applies a force of 5.6 x 10^10 N on its moon and the moon is 4.0 x 10^8 km away from the planet and it continues to circle the planet in a circular orbit of circumference

4. ### earth

a space traveller determines the radius of a planet to be half of earth . After landing on its surface , he finds the acceleration due to gravity to be twice of that of surface of earth. Find the ratio of mass of planet to the

1. ### Science

1.)Why is Earth’s temperature just right for life? (1 point) A.)Earth’s core is hot enough to heat Earth’s surface. B.)Earth’s magnetic field creates suitable temperatures on Earth’s surface. C.)Earth’s crust is warmed

2. ### Statistics

Astronomers treat the number of stars in a given volume of space as a Poisson random variable. The density in the Milky Way Galaxy in the vicinity of our solar system is one star per 16 cubic light years. (a) What is the

3. ### physic

Planet A and planet B are in circular orbits around a distant star. Planet A is 4.5 times farther from the star than is planet B. What is the ratio of their speeds vA/vB?

4. ### physics

Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere. The delicate instruments on board completely

1. ### Physics

Spaceman Spiff orbits planet X with his spaceship. To remain in orbit at 410km from the planet's center, he should maintain a speed of 68 m/s. What is the mass of planet X?

2. ### Algebra 2

A large asteroid crashed into a moon of a planet, causing several boulders from the moon to be propelled into space toward the planet. Astronomers were able to measure the speed of one of the projectiles. the distance (in feet)

3. ### science pleas help me

Gravitational Force Quick Check 1 of 4Items Assessment started: Gravitational Force Quick Check. Item 1 Use the table to answer the question. Planet Estimated Mass of Planet (1023 kg) W 6.4 X 3.3 Y 59.7 Z 48.7 On which planet

4. ### physics help 3!! **

Based on the following data about planet X (which orbits around the Sun): Planet X's distance from Sun = 3.6*1012 m Planet X's radius = 2*106 m Planet X's mass = 8.2*1022 kg a.) Find gx, the size of the acceleration due to gravity