Test 3 Flashcards
what are the essentials to the richess of Earth?
minerals, ores and volatile elements
what was the reality of the economy related to space industry?
-planetary resources failed to raise funds
-focused on the religion of space rather than model
-no clients base = poor revenue
what is a chondrule?
tiny solid spheres formed in the gas cloud tht surrounded the sun
what does the presence of chondrules give?
give-away sign that the rock came from a protoplanet that is undifferentiated.
composed of primordial material of our solar system
what’s the difference between achondritic meteorites and asteroids?
-don’t contain chondrules –> come from a differentiated parent body
e.g; ceres and vesta are differentiated
-they also come from different parts of parent body
e.g; stony are from crust
iron meteorites come from core
stony-irons come from mantle core
what are the three types of asteroids?
- C-Type asteroids; dark and carbonaceous (75%)
- S-Type asteroids; rusty red and composed of iron and magnesium silicate
- M-Type asteroids; rich with metallic substances
what mission was psyche?
mission to a metal world
-explore origins of planetary cores
Metallic asteroid 16 psyche
which is the heaviest know M-Type asteroid?
16 Psyche
give facts about 16 psyche…
-90% Fe
-Most massive M-type asteroid (11th)
-only known ‘iron-world’
what are high value asteroid materials?
H,C,N,O
what is In Situ resource utilization?
it is to use what is available on Moon and mars for sustained presence/launching further
where was water found on Mars and Moon?
Mars: 2% in soil, polar ice caps, subsurface ice/water
Moon: shadowed craters near south pole
Oxygen used for breathing…
extract from minerals
mars 2020 MOXIE
Regolith was used for?
construction of bases, landing/launch pads
what are potential benefits of in situ?
-scientific exploration of Moon and mars
-reduce cost of space exploration missions, including space telescopes for astronomy
-human colonization of Moon ad mars
-technological innovations
-economic returns
what are the challenges of in situ?
-low-gravity on asteroids–>diffcult to land and secure spacecraft, machinery
-unknown resources –> CONCENTRATION AND DISTRIBUTION not well known
-little existing technologies
-expensive
-no space market … yet
what are they using as shelters from harsh environments on mars and moon?
lava tubes
what’s a lava tube?
caves that are carved by flowing lava that eventually drains out leaving subsurface void
what are the caves often form?
fluid, basaltic lava flowing down a slope i.e side of volcano
liquid lava runs out and then?
cools underneath the surface which forms the lava tube
what is a site that was thought to be a lava tube?
Marius Hills Hole
are lava tubes subsurface structures?
yes
why are lava tubes a problem?
very few instruments are capable of performing direct measurements of underground structures
what new technology are they modernizing
technology using radar