Questions related to Space Exploration
"THIS IS AN ABSOLUTELY SCIENTIFIC QUESTION"
Space exploration needs more efficient thrusters to reduce travel time, for example to Mars.
What do you think of space agencies around the world thinking about putting nuclear reactor-based thrusters on future spacecraft?
Russian project to explore the moons of Jupiter after 2030 will be based on the nuclear propulsion spacecraft "Nuklon" with an electrical energy power of 0.5 MW. Such energy power gives the opportunity to significantly increase a data transfer performance to Earth. In my opinion, the speed of data transfer can be increase to 100 Mbit/sec. This value will be enough to use 4K Video for the investigation of dynamic processes in the atmosphere of Jupiter and moons. What is your opinion about this?
Which ozone sensor is perfect for
Balloon-borne Space Exploration project at a altitude of 40 kilometers? Please specify the model no also.
A number of earth like planets have been discovered, but they are thousands of light years away. What are our chances of living on these planets?
I am trying to study the dusty hypersonic flow over a sphere to find out the effect of particles in increasing stagnation heat flux using DSMC. I am using particle-wall collision model proposed Tabakoff et al. as there is no model proposed at hypersonic speed to the best of my knowledge.
Is there any other model available for particle-wall collisions at very high speed flows? Should I calculate the heat flux due to particles in the same way as gas-wall collision, i.e., change in energy before and after the collision?
 Tabakoff et al. "Effect of Target Materials on the Particle Restitution Characteristics for Turbomachinery Application." JOURNAL OF PROPULSION AND POWER Vol. 12, No. 2, March-April 1996
I want to start a philosophical discussion and ethical debate on the reasoning behind why humanity should and must become a multi-planet species.
- What do you think is the most profound and captivating reason(s) that you have to justify SpaceX and Elon Musk's goal of making humanity a multi-planetary species?
Elon said during the 68th Annual ISC on September 29th 2017:
"I think fundamentally the future is vastly more exciting and interesting if we're a spacefaring civilization and a multi-planet species than if we are not. You want to be inspired by things. You want to wake up in the morning and think the future is going to be great."
I agree with him here, but I think there is something more profound and captivating that must be addressed with regards to becoming a species that lives on more than just one planetary body. Other questions we may want to consider to help us reach this answer include:
- What are the ethical considerations we must address before colonizing other worlds?
- Do humans really deserve another planet to potentially ruin, or even sustainably terraform, if we cannot even figure out how to sustainably balance our own home world?
- One might ask why doesn't Elon use his genius to create new technologies that will advance the human race by solving some of the Earth's worst problems?
- Has he simply given up on this planet and does he therefore want a clean slate to build up from?
- Does Elon think that technological advancements resulting from the drive to become a spacefaring civilization (i.e. propellant production via. CO2 sequestration powered by 100% solar energy systems) will eventually rebound to help the Earth?
- Must we start colonizing Mars now (i.e. beginning in the year 2022) like Elon's timeline suggests? Potentially, if we wait too long, technologies to reverse climate change on Earth may not have advanced enough without the excitement of being spacefaring...
Lets see what everyone thinks about this, and let's keep it civilized in here. Try and get real profound!
Note in particular are you interested in the case where the rover may at times operate autonmously and at other times as a teleoperator while storing data for an astronaut user in a remote location, ie one of Mar's moons?
There are already plans about the possibly terraforming Mars. I am wondering which factors are most important in creating a place that is habitable by humans. Also, if there are alternatives to Mars that are currently being considered.
Here is the research that I found about terraforming Mars:
Perhaps Human base space exploration is going to enter into next generation. A good time to get commercial benefit from available & approachable "Wealth" in Space. NASA, SPACEX, European Space Agency and other organizations are trying to explore the potential benefits in space. In this regard, there are few questions;
1) What commodities can be consider as "wealth" in space ?
2) What natural phenomenon in space can come under "space wealth" ?
3) How human can get benefit from space wealth ?
4) What are different trades other than space-tourism, communication & weather-satellites can be possible ?
5) Any other aspects plz ?
Solar atmosphere causes difficulties in communication during opposition (when Mars is almost behind the sun w.r.t. Earth).
The question is: is it possible to define an extended radius for the sun, which the Earth-Mars line of sight should never pass through it? if there is, how much is it, in terms of angular separation?
I've read in some mainstream and NASA news that there is a two week blackout period during each synodic period of Earth-Mars. But I want to know the exact numbers. I'd appreciate any answer with technical references.
As part of the development of ISAAC, it would be beneficial to use COTS electronics for cost-reduction. However, ISAAC will be flying in Lunar orbit where the radiation environment exceeds that of LEO. I did some research in 2009/2010 for a star tracker that would have used COTS electronics and aluminum shielding. My question is this: Would it be possible to use aluminum to shield COTS electronics (namely radio transceivers and computer components) from the Lunar radiation environment? Again, this is just as a cost-saving measure (ISAAC would be sponsored by NASA to fly on a Korean Lunar mission), so it is possible to use rad-hardened components if really necessary. I also found some research on ResearchGate about plastics, but that indicated that PEMs are not a good fit for space travel.
I am wondering if it wouldn't be better to start using the term 'crew ground disconnect'. This seems a more objective and better description of tensions between astronauts and ground control.
What is Creatures and Creators Matrix?
Behind all the activities there are mindsets………And apparently mindset have mind at backend.........Seemingly Artificial Intelligence is not so well developed yet to produce mindsets without original biological alive brain present inside the body......wondering what will happen when Artificial Intelligence will produce mindset by own.............!!
Creatures and creators will learn definitely from each other...............about that scenario here are few questions
What do you think which directions the future AI based mindset can adopt and why?
What can be the basics and further developmental requirements of such mindsets?
And up till what extent such mind set can go to fulfill the desires?
What will be the factors which can have effects on it?
How good and bad will exist for AI based mind sets and what will be expected frame of reference (s)?
It can be foreseen that if space exploration don’t give them (AI based mindsets) the way out then a tough match will get play at Earth and In case of way out among cosmos then Nature will get a very strange events waves might be beyond space-time-relativity, if so then will natural laws get evolution, if again yes then in which direction and what will be the future matrix of Creatures and Creators?
This refers to the recent incident of presumably meteorite impact near Vellore in Tamil Nadu State, India, and supposedly first ever human causality due to meteorite(?) fall.
Knowing the quantum of space junk and their uncontrollable nature, nobody could write-off the plausibility of reentry of such materials into the atmosphere. If so, as they are nobody's child and also no country would own up their mess (as it may fix the anus of clearing the mess squarely on them and may also expose their mischief/incapability in space craft prowess) that in turn may warrant moral-monetary compensation. Nobody will own up their mistake, should the space junk was the source of the impacting materials. Should space junk was the source of the impacting material, Who is to be blamed? Who has to monitor? Who will fix the responsibility?
I am looking for a formulation between the _vector_ of the hyperbolic excess velocity and the corresponding hyperbolic orbit, especially the turning angle and the pericenter distance vector.
I would like to model a gravity assist maneuver but how do I derive the turning of the spacecraft vecolicty vector correctly without knowing the pericenter distance. The incoming hyperbolic excess velocity vector is given, but without a corresponding position vector I cannot derive an orbit. But per definition the position is at infinity. I would appreciate any help!
I am aware that there are a number of equations to derive the scalar relations of this parameters, but is not the vector, i.e. the direction of the incoming excess velocity already setting these parameters as well? I do not assume that the pericenter of such a trajectory is independent of the direction, right?
Thanks in advance!
What relevant science missions, that can be designed in cis-lunar space to get relevant science data not available but needed by the space science community?
Especially, taking nature of orbits around liberation points in consideration.
If possible, a narrowed down list of science instruments that can be deployed aboard a spacecraft would be great.
The research of granular flow under reduced gravity environment is a hot topic all over the world. Most research results are sevices for space exploration. Whether there is a chance to applly these results to terrestrial disasters? Thanks a lot
I have just completed my paper on flyby anomalies and now need to make a prediction of the Juno Oct. 9, 2013 flyby anomaly.
Does anyone here on RG have any knowledge of the following:
V_infty: that is, the incoming Juno speed at infty.
V_prg: that is, the speed of the Juno spacecraft at the perigee.
Theta: that is, the inclination of Juno's orbit relative to the spin axis of the Earth.
I am surprised that NASA has up to now not published the data of this anomaly. Does anyone have any idea how far NASA has gone in their analysis?
Will be grateful for you responce.
We have experienced the bulk crystal growth of InSb / GaSb and its doped crystal by the novel technique such as vertical directional solidification (VDS) has shown detached bulk crystal growth in our laboratory. However, detached bulk crystal had observed in NASA Space Mission III-V microgravity experiments in 1994. Present study has been carried in International Space Station (ISS).
Multiple suppliers of off-the-shelf CubeSat hardware sell side panels for 0.5U CubeSats, but I have not encountered anyone actually building and flying one. Has anyone else?
Are the chemical reactions that take place on earth really influenced by gravity or are they affected by another planet or satellite around the earth?
I would like to gather a group of scientists to establish a consortium for Horizon 2020 calls focusing bioregenerative life support systems based on halophyte-mediated wastewater treatment for space exploration proposes.
How much fuel can be saved for moon-earth missions and vice-versa? If we have a space station on moon similar to what we have what are the gains?
Recently Hubble discovered a spiral in Antilia constellations claiming to be millions of light years away. Besides it is a thing of distant past as the nearest star is four and half light years away?