[{"id":302,"title":"Bury bone ash to asteroids","sha":"48b602d80a3224598cc1fc016e46f336","user_id":null,"state":"published","body":"Land resources are very tight in the Earth. We can bury dead person‘s bone ash to asteroids. Some people are very rich, they may want to pay funds to do this. And the funds can be used to develop human's space science and deep space exploration. For example, asteroid 433 Eros is named because of the Greek god of love, the couple who love each other very much may want to pay one hundred million dollors to Aerospace Corp. and ask the corporation to bury their bone ash to asteroid 433 Eros to commemorate their love. We need an association to allocate vacancies to Aerospace Corp.  Then Aerospace Corp.  gain funds to develop human's space science and deep space exploration,  and pay taxes to government.","created_at":"2016-05-10T14:01:50.460Z","updated_at":"2016-05-13T03:01:19.376Z","zenodo_id":111998,"doi":"http://dx.doi.org/10.5281/zenodo.51292","subject":null,"tags":["bone ash","asteroids."],"vote_count":1,"view_count":1,"score":1.1,"deleted":false,"muted":false,"tweeted":false,"attachment_file_name":null,"attachment_content_type":null,"attachment_file_size":null,"attachment_updated_at":null},{"id":998,"title":"Space Debris Fingerprint Definition and Identification","sha":"b34c6d6a9469b415652a946a19f2c4cd","user_id":null,"state":"published","body":"The amount of space debris is increasing, and the threat to normal human space activities is also increasing. The concept of fingerprints of space debris is proposed here. It is necessary to define the fingerprints of space debris, and identify different debris characteristics according to the fingerprints of the debris fragments. The definition of debris fingerprints depends on ground-based and space-based cameras, radars, laser ranging and other related data. By defining the debris fingerprints, based on the uniqueness and stability of the debris fingerprints, a space debris fingerprint identification technology is created to verify the identity of the debris. Fragment fingerprint features include global features and local features. The overall features include direct and easy-to-identify features, including track inclination, track height, size, volume, shape cusp features, and the number of fingerprint lines. The number of fragment fingerprint lines is defined as the number of connecting lines between the center of the fragment and the cusp of the shape. The local features of fragment fingerprints include the position, direction, curvature, area and other features of non-smooth points, bifurcation points, fractures, zigzags, etc. of space debris.","created_at":"2022-08-24T07:30:15.843Z","updated_at":"2022-09-10T06:00:10.743Z","zenodo_id":7064100,"doi":"https://doi.org/10.5281/zenodo.7064100","subject":null,"tags":["space debris","space science","aerospace","astrophysics"],"vote_count":0,"view_count":1,"score":0.1,"deleted":false,"muted":false,"tweeted":false,"attachment_file_name":null,"attachment_content_type":null,"attachment_file_size":null,"attachment_updated_at":null},{"id":1003,"title":"Spacecraft cluster cloud high-frequency optimization computing theory","sha":"a91375e7bdfdeb706a67def2c0cff450","user_id":null,"state":"published","body":"The satellite-ground collaborative computing requires information transmission between the satellite and the ground, which will cause significant delay, resulting in a time from calculation to execution of more than milliseconds. In the best case, the spacecraft is 300km above the ground station, so the round-trip transmission between the satellite and the ground will cause a delay of 2 milliseconds. For cloud computing, if the distance between two spacecraft is 300 meters, the round-trip transmission of computing information between the two spacecraft will only cause a delay of 2 microseconds. Cloud computing refers to autonomous computing only by the spacecraft in the cluster, without the need for a ground station.\r\nCertain spacecraft swarm operations are extremely time-critical. This is just as high-frequency trading in the stock market places \"server clusters\" very close to the exchange's computers to shorten the distance that trading orders travel at the speed of light through fiber optic cables.\r\nSince the operation of the spacecraft obeys the laws of celestial mechanics, it is an important subject direction in the future to quickly optimize the allocation strategy of cloud computing and information transmission according to the changing relative position of the spacecraft.\r\n","created_at":"2022-09-10T13:41:02.313Z","updated_at":"2022-10-21T06:00:46.837Z","zenodo_id":7232600,"doi":"https://doi.org/10.5281/zenodo.7232600","subject":null,"tags":["computational science","spacecraft cluster","space"],"vote_count":0,"view_count":1,"score":0.1,"deleted":false,"muted":false,"tweeted":false,"attachment_file_name":null,"attachment_content_type":null,"attachment_file_size":null,"attachment_updated_at":null},{"id":1005,"title":"Calculation of multi-dimensional information acquisition in space potential disintegration target","sha":"20787d7ed0801b4042c1c0c190157bcc","user_id":null,"state":"published","body":"Some space debris belongs to the upper stage of the rocket, and propellant remains inside the debris, which may explode and generate more space debris. In order to identify potential disintegration targets in space, understand the remaining amount of propellant, fracture location and degree of fracture, aging degree, etc., and predict when space targets will disintegrate. Based on this information, we can carry out debris removal in advance, which plays an important role in the governance of the space debris environment. Here we propose to use an X-ray camera to image the space target, use the computer X-ray tomography technology to obtain the multi-dimensional information inside the space target, and establish a multi-dimensional model of the space target's internal information. Relevant technologies can also help us troubleshoot spacecraft on-orbit and help humans solve potential space risks.","created_at":"2022-09-10T14:34:51.753Z","updated_at":"2022-10-21T06:00:46.840Z","zenodo_id":7232610,"doi":"https://doi.org/10.5281/zenodo.7232610","subject":null,"tags":["space debris","space science","aerospace","astrophysics","breakup"],"vote_count":0,"view_count":1,"score":0.1,"deleted":false,"muted":false,"tweeted":false,"attachment_file_name":null,"attachment_content_type":null,"attachment_file_size":null,"attachment_updated_at":null},{"id":1139,"title":" Asteroid Defense Using Cleavage Agents","sha":"6c02b4331b9fa08475f8aef51c4bd9d4","user_id":null,"state":"published","body":"Traditional asteroid defense uses methods such as high-speed collisions or explosions, which require relatively large amounts of energy. However, it takes a long time to use Solar sail or other electric propulsion to drag asteroids away. It is necessary to study new methods of asteroid defense. This article proposes the use of cracking agents for asteroid defense. Firstly, the spacecraft drilled holes on the surface of the threatening asteroid, and then injected non explosive cracking agents into the holes. Under the action of cracking agents, asteroids will undergo non explosive fracture and disintegration. It can effectively achieve the goal of asteroid defense, without causing severe explosion effects and potential secondary disasters. Before actual asteroid defense, numerical simulations were conducted on the required drilling positions and number of holes to help us design asteroid defense missions.","created_at":"2023-07-12T07:19:15.767Z","updated_at":"2023-07-30T06:00:29.939Z","zenodo_id":8196222,"doi":"https://doi.org/10.5281/zenodo.8196222","subject":null,"tags":["minor celestial bodies","planetary defence","human survival"],"vote_count":0,"view_count":1,"score":0.1,"deleted":false,"muted":false,"tweeted":false,"attachment_file_name":null,"attachment_content_type":null,"attachment_file_size":null,"attachment_updated_at":null}]