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Questions tagged [asteroid]

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

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88 views

Would it be possible to make a bubbleworld in an asteroid?

Would it be possible to drill a bore hole into an asteroid, fill it with water tanks and use sunlight to blow a hole large enough to fit a rotating space station inside, seal it off and fill it with ...
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How big an asteroid could we take out with an ICBM?

Obviously it's not going to be all that big as the intercept would occur only a few minutes before impact and the rubble is still going to hit. However, if the pieces are small enough they go boom in ...
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How big would a collection of asteroids near the Moon's L4 point need to be to aggregate naturally into a “stepping stone” for space exploration?

Wouldn't it be useful to catch few meter sized near-Earth asteroids whenever opportunity knocks and "lock them up" at the L4 Langrangian point of our Moon ? Although at the L4 and L5 Lagrangian ...
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Are the estimated chances of Bennu hitting Earth in the next 200 years still about “1 in 1410” now that OSIRIS REx has scanned it?

This 2016 answer to Does Bennu pose a risk to Earth? And how can OSIRIS-REx's mission save us? says: Does Bennu pose a risk to Earth?: recent calculations produced a cumulative probability of 1 in ...
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Could ejecta from asteroid Bennu enter into temporary orbit around it? If so, how?

The New York Times article The Asteroid Was Shooting Rocks Into Space. ‘Were We Safe in Orbit?’ mentions concerns about material ejected from the Bennu entering temporary orbit around the asteroid ...
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Could we reverse gravitational slingshot a fast object to slow it down and capture it in an orbit?

I have heard of plans to capture an asteroid in an orbit around the earth, to have it close by so that we could study it more easily. Such objects can have very high velocities, (I assume) possibly ...
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Could a Gravity Tractor be used for mining asteroids?

Recently, I came across the concept of the Gravity Tractor for the first time. And I was intrigued. https://en.wikipedia.org/wiki/Gravity_tractor A Gravity Teather, as I understand it, is a concept ...
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Bringing an asteroid into reasonably low Earth orbit--can it be done?

Assume plenty of delta-v is available but it's very slow. At first glance it looks easy enough, get capture and spiral in. However, we have that big bully in the sky, aka Luna. Is it possible to ...
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Can we use magnetic devices to anchor to asteroids?

One of the challenges about missions to asteroids is staying attached to them when you land. Many asteroids are described as nickel/iron, and we know that both nickel and iron have magnetic ...
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Psyche 16 - What will be learned in 2026?

I've been looking into a lot of the Discovery series missions, and came across the fact that 2 future missions are proposed, one for Jupiter Trojans, another for visiting an asteroid named "Psyche 16"...
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Could the Orion project pusher plate model be used for asteroid deflection?

Could the Orion project pusher plate model be used for asteroid deflection? Basically, the plates (or hemispherical shells) would be deployed in the vicinity  of the asteroid , and the following ...
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Scenarios for asteroids 2000 QW7 and 2010 CO1 hitting the Earth?

These two NEOs have been appearing prominently in the popular news media recently: Two Gigantic Asteroids To Zip Past Earth on September 14 Two Gigantic Asteroids to Fly Past Earth on 14 September ...
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Are there any equations out there that can calculate the burnup of an asteroid depending on angle?

Are there any equations that can calculate the burnup of an asteroid depending on the angle? I want to be able to calculate the magnitude of an asteroid impact with the angle being the changeable ...
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Separating fact from fiction, how to get from this radar image to this GIF?

The NBC News article Mile-wide asteroid and its tiny moon to zoom past Earth this weekend; Dubbed 1999 KW4, the "binary" space rock will skim past our planet harmlessly at a distance of 3 million ...
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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 ...
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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 ...
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What's up with Brazil's ASTER mission? Is it still scheduled to launch in June 2020?

This answer says: Brazil is currently planning its first deep space mission to the triple asteroid 2001 SN263. The mission, named ASTER, has a launch opportunity in June 2020. and links to ...
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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 ...
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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225 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 ...
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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, ...
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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?
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127 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? ...
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215 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 ...
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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129 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 ...
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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 ...
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128 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 ...
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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, ...
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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 ...
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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 ...
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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 ...
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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$...
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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 ...
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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 ...
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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. ...
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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 ...
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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 ...
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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 ...
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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, ...