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Results tagged with planetary-science
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user 897
The study of planets, asteroids, comets, etc, including weather, geology, composition, etc. This tag should be used when the focus of the question is on the the science of a non-Earth non-star natural object, and not used when designing spacecraft to cope with said challenges.
7
votes
Accepted
Will the ExoMars rover offer some unique science capability?
The rover will be the first that can drill to a depth of 2 m (compared to a few cm for Curiosity). Its instruments for analyzing the drill samples will be more advanced than those on Curiosity. And it …
- 130k
1
vote
What is the heaviest chemical element that has been recovered from beyond cis-lunar space?
That's unlikely. Anything beyond Uranium is unstable, and the heavier an element becomes, the more unstable it gets. Since anything that gets to us from deep space has to travel for a long time to get …
- 130k
10
votes
When is the next Outer Planet lineup (Voyager)
A four-planet lineup is rare, as @Nickolai said. 3-planet lineups are a bit more common. New Horizons used a single gravity assist (Jupiter) to get to Pluto.
Grand Tour-type missions are going to be r …
- 130k
39
votes
Why are probes that tend to explore outer system always launched to go outwards instead of s...
We've had 5 flyby missions to the outer solar system so far. All of them had primary missions at one or more planets. That set the main constraints for their trajectories. Anything after the last plan …
- 130k
16
votes
How could InSight's seismometers be intentionally and meaningfully "pinged"?
The traditional method (as used in the Apollo project) was to crash used SIVB stages into the Moon.
- 130k
30
votes
If there's nothing special about Pluto, why was it discovered so early?
Pluto was discovered by a manual search of the sky using a blink comparator. This is an extremely laborious process. For Pluto, it made sense to go to all this trouble, because there were indications …
- 130k
9
votes
Accepted
High resolution images of surfaces of other planets and moons
This has been done for the Moon, Mars and Mercury.
The Lunar Reconnaisance Orbiter mission aims to map the moon. It has two narrow-angle cameras which make black-and-white images of the surface, captu …
- 130k
5
votes
Is NASA launching fewer interplanetary missions?
The anomaly may not be that the number of missions is declining, but that it's been so high in the past few years.
Here are some new graphs from Emily Lakdawalla at the Planetary Society. First the mi …
- 130k
3
votes
What will be the effect if we stand on Jupiter?
If we ignore the atmospheric effects for a moment, let's see what gravity does as you descend into a planet (and this goes for all planets, rocky or gaseous).
According to Newton's Shell theorem, in …
- 130k