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Science: E&S Test 11

Across
The Father of Modern Rocketry
What is the mean solar time at the Prime Meridian called
What unit of time is based on the period Earth takes to orbit the sun once
The two points at which the apparent path of the sun crosses the celestial equator is
What visible-light telescope was launched into space, enabling seeing without atmospheric distortion
The speed at which a spacecraft must be traveling to leave Earth's gravity without using its rockets anymore
The sun's northernmost and southernmost points on the ecliptic are called the
An unmanned spacecraft launched specifically to explore the unknown is
Any activity performed by an astronaut outside a spacecraft is called an
Down
What maneuver allows a spacecraft to steal a planet's motion, thus increasing its speed and orbit as it flies past
The first artificial object to orbit the earth was
When white light shines through a gas and then passes through a prism, the broad spectrum of color will show narrow, dark lines called
A rocket that used various combinations of liquid chemicals that expand greatly when they react with each other is called
A satellite equipped with special devises to detect radiation that cannot penetrate Earth's atmosphere is an ? satellite
A telescope that uses a large, curved mirror as the objective is ? telescope
The unit of time, larger than a day, that is not based on the motion of a heavenly body
The first type of spacecraft designed to be reused was the ?
The satellite stays above the same point on the earth's surface in a ? orbit
What term refers to the earth's slow 'wobble' on its axis that causes the pole star to change
The first Chinese astronaut
What was the first space station launched by the US