请问科幻迷,人类在太空中能繁衍吗?

首先庆祝中国载人航天又迈了一大步。
似乎很难着床?然后在失重的状态下,婴儿会发生发生什么变化,new type?还是一个肉球(好吧。。)
想听听大家的想法

2 个回答

科学家们已经在太空进行了各种各样的植物和动物的繁育实验。除了借此了解人类在太空的生育情况之外,这些实验也可以用于太空旅行中食品的自我再生。但迄今还没有实现某个物种的完全可再生循环。

实验鼠在零重力下能够正常产生卵子,但是在怀孕期间母鼠的体重会迅速降低。在刚到太空的时候,公鼠难以进入交配的状态。幸运的是它们很快就适应了新的情况。所有的母鼠都能怀孕,只是有三分之一母鼠的受精胚胎无法进入子宫。而且老鼠在太空中分娩很困难。有可能一窝新生的老鼠都是死胎。

受精过程在微重力环境下能够正常完成,但是继续培养后研究人员发现,初期胚胎的生长 速 度 缓慢。经观察,受精卵分裂过程中,向胎盘一侧的细胞分化被抑制,这一侧聚集的细胞数量少于正常值,延缓了胚胎生长。雌鼠被植入经培养得到的胚胎后,虽然也能生产正常的幼鼠,但产子率只有正常情况下的一半。

以上实验告诉我们——不是不可能,只是还需要很长时间的探索

Sex in space

From Wikipedia, the free encyclopedia
Sex in space refers to sexual activity in the weightlessness and/or extreme environments of outer space. Usually only human sexual activity is considered. The act of human intimacy, sexual intercourse, and procreation distinguished by the state of weightlessness (precluding artificial gravity) presents difficulties surrounding the performing of most sexual activities due to Newton's Third Law. The issue also includes conception and pregnancy in off-Earth environments.[1][2][3][4]
The topic of sex in space has been hotly debated to clarify its potential impact on human beings in the isolated, confined, and hazardous space environment. Past discussions often included attempts to determine the veracity of speculations (e.g., about the STS-47 mission, on which married astronauts Mark C. Lee and Jan Davis flew), and even hoaxes, such as Document 12-571-3570. Experts such as Princeton astrophysics professor Dr. J. Richard Gott consider humanity's expansion into space crucial to survival,[5] but it was considered taboo for decades of spacefaring exploration history.[6][7]
As of 2009, with NASA planning long-term missions for lunar settlements with goals to explore and colonize space, the topic has taken its respected place in life sciences. Scientist Stephen Hawking publicly concurred in 2007 that possibly human survival itself will depend on successfully contending with the extreme environments of space.[8][9]

Physiological issues

Numerous physiological changes have been noted during spaceflight, many of which may affect sex and procreation, although it remains unclear whether such effects are due to gravity changes, radiation, noise, vibration, isolation, disrupted circadian rhythms, stress, or a combination of these factors.[10]
The primary issue to be considered in off-Earth reproduction is the lack of gravitational acceleration. Life on Earth, and thus the reproductive and ontogenetic processes of all extant species and their ancestors, evolved under the constant influence of the Earth's 1G gravitational field. It is imperative to study how space environment affects critical phases of mammalian reproduction and development as well as events surrounding fertilization, embryogenesis, pregnancy, birth, postnatal maturation, and parental care.[11] Gravity affects all aspects of vertebrate development, including cell structure and function, organ system development, and even behavior. As gravity regulates mammalian gene expression then there are significant implications for successful procreation in an extraterrestrial environment.
Studies conducted on reproduction of mammals in microgravity include experiments with rats. Although the fetus developed properly, the rats that developed in microgravity lacked the ability to right themselves.[12] Another study examined mouse embryo fertilization in microgravity. Although both groups resulted in healthy mice, the authors noted that the growth rate was slower for the embryos fertilized in microgravity than for those in normal gravity.[13]

Psychosocial issues

The psychosocial implications of in-flight sex and reproduction are at least as problematic as the related physiological challenges. For the foreseeable future, space crews will be relatively small in number. If pairing off occurs within the crew, it can have ramifications on the crew's working relationships, and therefore, on mission success and crew operations.[14][15] Behavioral health, close proximity, compatibility and coupling will all be factors determining selection of crews for long term and off-planet missions.
Lyubov Serova, a specialist with the Russian Institute for Biomedical Problems (IBMP) in the field of procreation in the conditions of spaceflight, says "After a period of adaptation for weightlessness, people will not need any special devices, like elastic belts or inflatable tubes to have sex in space," and "We study the impact of weightlessness on the reproductive function of male and female bodies by using mammals as test subjects, particularly rats." The overall conclusion is that sex in space is not a physical problem, and that individuals motivated enough to embark on space flight won't be distracted by sex.[16]

我进行google渣翻译简介:

大意是人类在亲密*行为,需要考虑失重状态(排除人造重力)需要克服牛顿第三定律的困难,另外像受孕&妊娠离地环境也很难完成。

生理上的变化:太空中许多因素会影响性与生殖,虽然目前还不清楚这种影响是否是由于重力变化,辐射,噪声,振动,隔离,昼夜节奏混乱,压力,或这些的组合因素。

太空中繁衍的主要问题是的重力加速度缺乏。地球上的生命,所有现存物种和他们的祖先的生殖和个体发育过程,在地球引力场的不断影响下而演变。当务之急是研究太空环境如何影响哺乳动物的繁殖和发展,以及胚胎发育,怀孕,分娩,产后的成熟,父母照顾。重力影响脊椎动物发展的各个方面,包括细胞结构和功能,器官系统的发展,甚至行为。由于重力调节哺乳动物的基因表达,对成功生育产生重大影响。

在微重力环境对哺乳动物繁殖进行的研究包括实验大鼠。虽然,在微重力的老鼠缺乏自行OOXX的能力。另一项研究在微重力小鼠胚胎受精。专家指出,在微重力受精的胚胎比在正常重力增长速度慢,但胎儿可正常发展。微重力环境对小鼠胚胎发育的影响

另外船员的内部以及心理挑战问题(感情不可以作为科学,而且还是人类,一般都是被禁止和封闭信息的,搜不到)…太空繁殖还需要大量的哺乳活体实验和科学方法,人类进军太空繁衍的道路还很漫长。

  1. ^ Thrusters on full: Sex in space, By Keiron Monks, Metro World News; 10 April 2012
  2. ^ Outerspace sex carries complications by Alan Boyle, Science editor MSNBC 24 July 2006
  3. ^ Seks in de ruimte: is het mogelijk?, By Caroline Hoek; 7 April 2012
  4. ^ S’envoyer en l’air dans l’espace Par Kieron Monks, Metro World News; 11 Avril 2012
  5. ^ wayne (29 September 2008). "J. Richard Gott - Space Colonization Imperative". Idea Festival. Retrieved January 2009.
  6. ^ The Universe: Sex in Space Explores Human Side of Space, by Darpana Kutty; Top News India 02 Dec. 2008
  7. ^ The Universe: Sex in Space Marks New Era For Mankind; History Channel, Dec 2008
  8. ^ Hui, Sylvia (13 June 2006). "Hawking Says Humans Must Colonize Space". Space.com/Associated Press. Retrieved january 2009.
  9. ^ The importance of sex in space Cosmos, the science of everything; May 20, 2012
  10. ^ Jennings RT, Santy PA. Reproduction in the space environment: Part II. Concerns for human reproduction. Obstet Gynecol Surv. 1990;45:7-17
  11. ^ Ronca AE. Mammalian development in space. Adv Space Biol Med. 2003;9:217-251
  12. ^ http://gateway.nlm.nih.gov/MeetingAbstracts/ma?f=102222743.html
  13. ^ Wakayama S, Kawahara Y, Li C, Yamagata K, Yuge L, T Wakayama (2009). Dey, Sudhansu Kumar. ed. "Detrimental Effects of Microgravity on Mouse Preimplantation Development In Vitro".PLOS One 4 (8):e6753. Bibcode 2009PLoSO...4.6753W. DOI:10.1371/journal.pone.0006753.
  14. PMC 2727478. PMID 19707597.
  15. ^ Gallagher B. No Space Sex? Scientific American. 2000;282:22.
  16. ^ Harrison AA. Spacefaring: The Human Dimension. Los Angeles: University of California Press; 2001

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