Topic 1-2
How many planets could ancient civilizations see
Five planets — Mercury, Venus, Mars, Jupiter, and Saturn were known to the ancients.
The method of measuring distance indirectly by creating an imaginary triangle between an observer and an object whose distance is to be estimated.
What is triangulation?
This produces images 100 times as detailed as the largest optical telescopes that exist today.
What is Very Long Baseline Interferometry (VLBI)?
Charged particles that flow in every direction from the sun.
Our magnetic field protects us from these.
What are solar flares?
A star that is moving away from you.
What is red-shifted?
Aristotle proposed that the Earth was the center of the Solar System. This model is the:
Geocentric Model
Can tell us what a star is made of, and if it is moving toward us or away from us.
What is spectral analysis?
Using more than one telescope to create an image of higher resolution.
What is Interferometry?
The separation of the inner planets and the outer planets.
What is the asteroid belt?
a modular space station in low Earth orbit. It is a multinational collaborative project involving five participating space agencies.
What is the International Space Station?
Planets revolving around the sun is the ______ system.
Heliocentric System.
A device made of thousands of closely spaced slits.
What is diffraction grating?
A method of acceleration which enables a space craft to gain extra speed by using the gravity of a planet.
Gravitational Assist
Stars are formed from these.
The science of taking measurements of Earth and other planets from space.
What is remote sensing?
Planets' orbits are shaped like which shape?
Ellipses or Ovals
The ability of a telescope to distinguish details.
What is resolving power?
Devices that convert light signals into electric signals in digital format.
What are charged couple devices?
This hypothesis explains how planets are formed.
What is the protoplanet hypothesis?
The phenomenon that the observed frequency of a wave changes if the source of the wave and the observer are moving toward or away from one another.
What is the Doppler effect?
Explain these: azimuth, and altitude and include degrees.
And, what does an Astroblade measure?
Aziumuth is similar to a compass (0-360 degrees)
Altitude is the distance above the horizon (0-90 degrees)
An astroblade measures altitude.
The average distance from the Sun to the Earth
What is an Astronomical Unit?
Very Long Array
Very Long Baseline Interferometry
VLA is connected by cables in New Mexico, US.
The Herrsxprung-Russell Diagram graphs the relationship between ________ and ________ of stars.
What is brightness and temperature?
How high or how far a rocket travels is dependent on its_______.
What is exhaust velocity?