Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [asteroid]

Questions about asteroids, bodies in the solar system smaller then planets which orbit the sun.

1
vote
1answer
84 views

How did fictional asteroid 2019 PDC get its name?

Gizmodo's NASA and FEMA Will Simulate an Impending Asteroid Strike Next Week The hypothetical discovery takes place in 2019, but what does "PDC" stand for? Perhaps it is another "discovery" by the ...
0
votes
0answers
11 views

How exactly is asteroid composition determined using spectral data from key regions not observable through Earth’s atmosphere?

@LocalFluff's answer to the question How does one spacecraft best visit multiple asteroids? mentions the proposed CASTAway Asteroid Spectroscopic Survey mission proposal and links to the conference ...
16
votes
2answers
2k views

Traveling through the asteriod belt?

The question What's the (particle) density of the asteroid belt? is about the density of objects in the asteroid belt. As a follow up related question and what I am interested in: When we send ...
3
votes
0answers
35 views

How can we be certain that Ryugu is a remnant of the material that did not form planets?

Its mentioned here https://www.theguardian.com/science/2019/feb/22/japans-hayabusa-2-successfully-touches-down-on-ryugu-asteroid that Ryugu is a part of the Solar System material that did not get ...
1
vote
1answer
56 views

Can small asteroids in the asteroid belt be detected on the fly and how much of a threat do they represent for a human manned space mission there?

Supposedly there are between 1.1 to 1.9 millions asteroids larger than 1 km in the asteroid belt. I assume there are many more , a lot of smaller ones, which cant be detected from here. According to ...
3
votes
1answer
107 views

Has the possibility of the return of organisms along with mined asteroid products to Earth been considered or discussed [closed]

Is it possible that mining on asteroids could bring life back to Earth such as bacteria?
9
votes
1answer
115 views

How small must an asteroid be to burn entirely in the martian atmosphere?

The Martian atmosphere is thinner and the magnetic field isn't present. I wonder how many asteroids fall and if at least the small ones can burn in the atmosphere before reaching the soil. Thanks in ...
1
vote
1answer
168 views

How do Saturn's rings affect the surface of the planet?

How do Saturn's rings affect the surface of the planet, and could a possible habitable exo-planet have a similar ring pattern to Saturn? Besides the probable increase of asteroids hitting the planet ...
8
votes
1answer
200 views

How to manage landing on unlandable asteroids?

If asteroid's rotation period provides greater centrifugal force than gravity, having tangential surface velocity greater than escape velocity, and/or if due to an oddly enough shape, it has no fixed ...
5
votes
1answer
228 views

What precisely was the character of the non-gravitational acceleration of Oumuamua?

When exactly did Oumuamua accelerate, when did it begin, when did it end, was it uniform across that period, and at what vector did it occur? I've seen some vague references to it lasting 100 days, ...
2
votes
0answers
43 views

When were the presence of specific elements on asteroids first identified?

Is there an approximation on when scientists first found out about certain elements on asteroids? What about gold in particular?
2
votes
1answer
90 views

How to achieve escape velocity from Ceres?

If I am interested in a sample return mission to Ceres using a similar propulsion technology package to Dawn, what kinds of additional propulsion would be required to land and then return? ...
5
votes
1answer
206 views

What kinds of instruments do you need to detect whether liquid water/ice is on a planet?

Somewhat of a two-part question. Firstly I'm interested to know if it is expected that a planet/asteroid has water/ice on it, what kinds of scientific instruments you need to identify the presence and ...
1
vote
0answers
37 views

are there public ideas/concepts for space mining machines?

If a company were to send a rocket into space they would need some kind of mining machine on board to mine on, for example, an asteroid. I was wondering if a company already has a good idea for a ...
2
votes
1answer
96 views

Could I claim a asteroid if I landed on it?

Could I claim a Asteroid if I landed on it? If so, could I have a nuclear reactor on it for a power generator?
22
votes
2answers
2k views

Is Mars more at risk than Earth for asteroid collisions?

When looking at topographical pictures of Mars it seems like there are craters far more frequently than here on Earth. This statement, of course, is just pure speculation on my part. However, it makes ...
2
votes
2answers
62 views

Examples of gamma ray or X-ray imaging of small planets, moons, or asteroids, or at least how to calculate intensity thereof?

Have any spatially resolved measurements of gamma rays or X-rays from medium and small solar system bodies been collected from space? These might be planets, moons, or asteroids for example, but ...
7
votes
1answer
230 views

If Oumuamua was alien space-junk, what would it look like, and would we be able tell?

I'm interested in our recent interstellar visitor 'Oumuamua. Whilst I'm happy to accept the official explanation of what it is, I'm curious about what state it would be in if it was actually alien ...
2
votes
2answers
85 views

Inspect an asteroid before mining?

If I were to send a mining machine in, for example, a Falcon Heavy, I would first have to inspect the asteroid before I could start mining, so I would really have to send 2 rockets. First to inspect ...
3
votes
1answer
67 views

What's next for Planetary Resources?

The company Planetary Resources had great success with their Arkyd-6 mission earlier this year and were recently purchased by a ConsenSys. I'm wondering if they have published any plans about future ...
3
votes
1answer
90 views

How was the standard of a potentially hazardous object (PHO) being determined?

I was going through an article about Bennu asteroid and OSIRIS-REx mission and done a quiz. There is an interesting question: What's a Potentially Hazardous Asteroid? a. One at least 500 feet ...
3
votes
1answer
136 views

How does the hopping mechanism of the Minerva II rovers work?

The Minerva II rovers deployed to Ryugu by Hayabusa 2 have gotten a lot of news coverage for their hopping method of locomotion. Is there public information on exactly how this works? I seem to recall ...
1
vote
1answer
118 views

How much asteroid can we divert from the Earth?

There are many movies with the Earth being saved by sending a bomb out blow up the asteroid. What realistically could we do to that degree today? Do we have interplanetary missiles? if so how much of ...
2
votes
1answer
96 views

Will asteroid 2015 YA have a collision with Venus in october 2018?

When you use the Small-Body Data Browser of JPL Solar System Dynamics and do the search for asteroid 2015 YA, and after that push the [ show orbit diagram ] button, you can see that on october 12, ...
2
votes
2answers
98 views

Can we remotely measure the age of `Oumuamua or Bee-Zed by measuring radioactive isotope ratios?

Radiometric dating such as radiocarbon dating is commonly used for measuring the age of rocks, including meteorites. This is normally an active in-situ measurement. But spectral differences between ...
3
votes
0answers
217 views

Sources for SPICE Kernel (SPK) files for asteroids

Besides the official source for SPK files (ftp://ssd.jpl.nasa.gov/pub/eph ...) is there a place where people upload kernels for the smaller bodies in the solar system? I was looking for the Jupiter ...
1
vote
0answers
106 views

How could asteroid 2013 ND$_1$$_5$ become a moon of Venus with the aid of rocket engines?

Notice: Although this question is similar to this one, it is different because asteroid 2012 XE$_1$$_3$$_3$ has a transitional path between Venus's Lagrangian points L5 point and L3 point, whereas ...
1
vote
1answer
147 views

Could asteroid 2012 XE$_1$$_3$$_3$ become a moon of Venus with the aid of rocket engines?

2012 XE$_1$$_3$$_3$ is an asteroid, classified as near-Earth object of the Aten group that is a temporary co-orbital of Venus. It is following a transitional path between Venus's Lagrangian points L$...
2
votes
2answers
148 views

How much will Bennu rotate faster and faster with mirrors facing the Sun on its left side?

Several answers to the question "Why paint only one-half of Bennu" describe the Yarkovsky effect as an important force acting on the asteroid 101955 Bennu. But what about the radiation pressure of ...
11
votes
3answers
3k views

Could a Boring Company Excavation Tool be used to create a large circular chamber inside an asteroid?

I saw an awesome post by a user about 1g off-Earth habitats. Radiation protection is provided to humans when habitats have a lot of mass between habitation areas and sources of radiation. Long-term ...
4
votes
1answer
122 views

DLR Mascot asteroid lander's unusual “torque wheel-based” propulsion system

Soon the Japanese Hayabusa 2 mission will release the German "Mascot" Lander onto the surface of the asteroid. The small box shaped lander then impacts the surface and preforms science experiments. ...
3
votes
1answer
201 views

What does this paper say is wrong (quantitatively and procedurally) with WISE & NeoWISE asteroid data?

I don't have daily access to the journal Icarus so when I read the New York Times article Asteroids and Adversaries: Challenging What NASA Knows About Space Rocks; Two years ago, NASA dismissed and ...
4
votes
0answers
83 views

What is synthetic tracking, and why would a 35 cm Earth imager be 10-30x better than Pan-STARRS or LSST for interstellar asteroid discovery?

The ArXiv preprint Technical Note: Asteroid Detection Demonstration from SkySat-3 B612 Data using Synthetic Tracking is an interesting read! The abstract says: We report results from analyzing the ...
6
votes
1answer
367 views

What Platinum minerals are expected to be found in Asteroids?

High quantities and values have been claimed for the Platinum and other high value metals in Asteroids - prompting (or perhaps in order to prompt) interest in mining them. Is this high value metal ...
17
votes
3answers
641 views

Can we expect to find pure iron or only nickel-iron alloys in asteroids?

Relatively pure iron has more uses and potential value than nickel-iron alloys. Separating those nickel-iron alloys commonly found in meteorites and expected to be common in asteroids (Kamecite, ...
5
votes
1answer
130 views

Is it possible for an asteroid to be captured by earth in such a way that it has minimal relative velocity?

Is it possible for a metal (or dirt/ice) asteroid of 1km average diameter to enter the Earth-Moon system in such a way that the asteroid behaves as if it were dropped from a height instead of as a ...
1
vote
1answer
89 views

Can plant/tree seeds come from other planets carried by Asteroids? [closed]

I've read that some plant and tree seeds can be cryogenically preserved for years, if not decades. However, I've not read of anyone considering the following theory: Could it be possible that our ...
4
votes
1answer
129 views

When should a rocket be launched to reach a Near Earth Asteroid like 2001 US16?

Earth takes 365.25 days to complete its orbit around the Sun. Earth also travels at 67000 mph. Asteroid 2001 US16 (also known as 89136) takes 577 earth days to complete it's orbit around the Sun. To ...
1
vote
0answers
74 views

What class of near-earth asteroids would be most feasible for colonization? [closed]

There are four types of near-earth asteroids: Apollo class asteroids, with orbits that intersect Earth and semi-major axes larger than Earth's Aten class asteroids, with orbits that intersect Earth ...
1
vote
0answers
83 views

Trojan Asteroids, are they Beneficial or Potentially Dangerous?

I know that Jupiter has a bunch of trailing asteroids surrounding it dubbed "Trojans". Due to its massive gravitational pull Jupiter is likely a co-creator of Earth in many ways, diverting asteroids ...
14
votes
3answers
693 views

Why paint only one-half of Bennu?

The Gizmodo article Instead of Nuking an Asteroid Headed Toward Earth, We Could Just Splash It With Paint says: “Even just painting the surface a different color on one half would change the ...
4
votes
2answers
227 views

Asteroid Defense

Has Space X thought about landing on an asteroid, and deploying technology that can either redirect or disassemble an incoming asteroid to avoid or lesson the asteroids impact on earth? I read NASA's ...
5
votes
0answers
140 views

Small-bodies landing strategies

Looking at past landing missions on small bodies such as Eros, Itokawa and 67P I found different landing strategies Eros: NEAR Shoemaker probe performed 4 impulsive pre-planned open-loop maneuvers to ...
0
votes
0answers
93 views

Are there clusters of small asteroids in the Kuiper or asteroid belt which could threaten the Earth?

I watched an episode of Curious Droid talking about the types of impacts of asteroids the size of Near Earth Objects. Are there clusters of small asteroids which are gravitationally bound together (or ...
0
votes
0answers
113 views

Can an ion drive attached to an asteroid move it into another orbit if given enough power?

After watching one of the videos from Curious Droid on Youtube talking about asteroid deflection and strikes I had an idea. Ion thrusters provide bits of mass velocities at the needed Isp (5-6 km/s ...
3
votes
2answers
187 views

Clohessy - Wiltshere equations in electric propulsion

Further to my "asteroid chasing" question regarding the HCW equations (Clohessy - Wiltshire equations for use in Asteroid "chasing"), I was wondering if there was some transformation of ...
4
votes
1answer
190 views

Clohessy - Wiltshire equations for use in Asteroid “chasing”

So I'm actually a student studying this sorta thing, and an assignment I have is to chase/rendezvous with an asteroid. I've done my reading on the C-W equations (what little I could understand) and ...
-1
votes
1answer
273 views

If the Tesla Roadster happened to crash into an asteroid, would the asteroid be damaged?

If the car has the luck to find a rock of more or less his mass, taking the mass and speed into account, can it make a considerable amount of damage in an asteroid?
3
votes
1answer
91 views

How satellites handle obstacles for short or long term missions

Do scientist consider small asteroid/stones/junk in space while sending satellites to orbit or for long range missions like for Mars? If yes, then how can they identify the trajectory and prepare ...
2
votes
1answer
203 views

How predictable is one asteroid's trajectory?

If one fictitious probe mission was to impact an asteroid fast enough to destroy it using its kinetic energy, could the asteroid's trajectory be predicted accurately enough (plumes or emanations or ...