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23 Cards in this Set
- Front
- Back
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Upsilon Andromedae
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First multiple planet system
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HD 209458
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Another Hot Jupiter - important though - contains water
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How do we know HD 209458 contains water?
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used a spectograph during planetary transit
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Gliese 581c
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Low-mass planet, with mass 5 Mearth
Orbit semi-major axis 0.07 AU Low-mass star |
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Several planets are currently known in the Habitable Zone around their parent stars but...
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All of these are gas giants no solid surface
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So … need **** planets in the HZ with giant moons …
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giant
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Terrestrial Planet Finder
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Ultra-high-contrast imager satellite
Capable of finding Earth-mass planets in HZ around nearby stars |
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We have found hundreds of planets around other stars
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Overwhelming majority are massive gas giants, many close to their parent star
This is because they are easiest to find with the Doppler technique |
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****** seems more common than circular orbits; problems for life
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Eccentricity
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Future searches will be sensitive to Earth-mass planets in the HZ
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Since we cannot see any right now
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The Apollo 11 spacecraft was launched from....
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Cape Kennedy in July 1969
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After 2 hr and 33 min in Earth orbit the Apollo 11 spacecraft...
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the S-IVB engine was reignited for acceleration of the spacecraft to the velocity required for Earth gravity escape.
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After the Apollo 11 spacecraft reignited its S-IVB engines, it began.....
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lunar-orbit insertion
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After the Apollo 11 did lunar-orbit insertion.....
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Each orbit took two hours. Photographs taken from lunar orbit provided broad views for the study of regional lunar geology.
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What did the Apollo 11 mission do after taking pictures for regional lunar geology?
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the LM descent engine was started for the last time and burned until touchdown on the lunar surface. Eagle landed on the Moon 102 hr, 45 min and 40 sec after launch.
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What happened on the Apolo 11 mission immediately after landing on the Moon?
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Armstrong and Aldrin prepared the LM for liftoff as a contingency measure. Following the meal, a scheduled sleep period was postponed at the astronauts' request, and the astronauts began preparations for descent to the lunar surface.
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Astronaut Armstrong emerged from the spacecraft first. While descending, he released the ***** on which the surface television camera was stowed, and the camera recorded humankind's first step on the Moon at 109:24:19 GET (pictured at left).
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Modularized Equipment Stowage Assembly (MESA)
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After the first steps on the moon...
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A sample of lunar surface material was collected and stowed to assure that, if a contingency required an early end to the planned surface activities, samples of lunar surface material would be returned to Earth
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The astronauts carried out the planned sequence of activities that included
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1) deployment of a Solar Wind Composition (SWC) experiment
2) collection of a larger sample of lunar material 3)panoramic photographs of the region near the landing site and the lunar horizon, closeup photographs of in place lunar surface material 4) deployment of a Laser-Ranging Retroreflector (LRRR) and a Passive Seismic Experiment Package (PSEP), and 5) collection of two core-tube samples of the lunar surface. |
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in simpletons terms what did they do after the moonwalk?
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1) Deployed solar wind experiment
2)collected rocks 3)picturesss 4)laser ranging retro reflector (mirror on the moon) 5) dirt |
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The CM entered the atmosphere of the Earth with a velocity of 36,194 feet per second (~ mach 33) and landed in the
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Pacific Ocean.
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A. Compare air-flight problems of the 19th century to space travel problems now
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breathing is an issue for one....
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Fundamental limitations of interstellar travel
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1. Spacecraft size
a. Human habitat b. Fuel (Remember that we’ll need to undo all of the acceleration that we create.) 2. Elapsed time of mission 3. High velocity flight |
