外围体育投注

Press J to jump to the feed. Press question mark to learn the rest of the keyboard shortcuts

AskScience: Got Questions? Get Answers.

r/askscience

58
pinned by moderators
Posted by
Mod Bot
21 days ago
Moderator of r/askscience
58
4 comments
2.8k
Posted by9 hours ago
2.8k
220 comments
636
promotedPosted by2 months ago
Comments are locked
636
0 comments
11.8k
Posted by1 day ago
GoldMind BlownAll-Seeing Upvote2
11.8k
1.2k comments
7
Posted by
Mod Bot
2 hours ago

外围体育投注I have strong interests in robotic space exploration and comparative analogue science - the study of places on Earth that are similar to environments on other planets and moons. Over the past fifteen years, I've logged 3,000+ field work hours all over the world, including work in the Arctic, Antarctic, and desert environments, where I've tested and performed scientific investigations with multiple prototypes of planetary exploration instruments on board European Space Agency, Canadian Space Agency, and NASA missions. Some of the technologies developed by my team include one of the world's most advanced ocean exploration platforms in NASA's toolbox, an underwater robot to explore extraterrestrial oceans, and the most sensitive laser Raman spectroscopy sensor currently under development for NASA, a first in class instrument that can detect traces of extinct and extant life in planetary surfaces.

I will be on at 11am PDT (2 PM ET, 18 UT), AMA!

外围体育投注Username: setiinstitute

7
2 comments
3
Posted by2 hours ago

At the time where people started to go to space they made these small spacewalks from the crew capsules but how did they do that? I think they needed some kind of airlock so they don't lose their air but how does an airlock fit inside these small capsules? Or did they just had a tank of air to fill the vacuum after the spacewalk?

外围体育投注I'm sorry if my sentences sound wierd. English is not my first language but I hope you understand what I mean. Understanding it is easier than writing. I also didn't know what flair to use for my question because there was none for spaceflight or something similar so I just used the Physics one

3
4 comments
13
Posted by10 hours ago

Based on observation, it seems to me that the square root of any positive integer is always either another positive integer or is irrational. Is this true? Has it been proven? Is there a simple explanation for understanding why it is true (or not).

13
8 comments
8
Posted by10 hours ago
8
16 comments

About Community

Ask a science question, get a science answer.
19.5m

Members

8.4k

Online


Created Sep 5, 2008

r/askscience

Please read our and before posting

  • Ask questions clearly and concisely in the title itself; questions should end with a question mark
  • Answer questions with accurate, in-depth explanations, including peer-reviewed sources where possible
  • Upvote on-topic answers supported by reputable sources and scientific research
  • Downvote anecdotes, speculation, and jokes
  • Report comments that do not meet our , including
  • Be civil: and follow Reddiquette

r/askscience Rules

1.
Medical advice
2.
Offensive or abusive language
3.
Homework question
4.
Meme, joke, or just link
5.
Top-level comment not answering the question
6.
Nonreputable answer
7.
Simple calculation or easily Googleable

Calendar

外围体育投注AskScience AMA Series: Dr. Pablo Sabron, SETI

August 14, 2020

外围体育投注Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science

August 19, 2020

AskScience AMA Series: NASA Ocean Worlds Week

August 20, 2020

Ask Anything Wednesday - Engineering, Mathematics, Computer science

August 26, 2020

外围体育投注Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology

September 2, 2020

Features

  • Book List
  • : Outstanding posts recognized by the mod team
  • : Archives of AskAnything Wednesday, FAQ Fridays, and more!
  • : In-depth answers to many popular questions
  • and posts
  • /r/AskScienceDiscussion: For open-ended and hypothetical questions

Related Communities

外围体育投注Find our comprehensive list of related subreddits here!

Moderators

u/iorgfeflkd
Biophysics
u/Jobediah
Evolutionary Biology | Ecology | Functional Morphology
u/foretopsail
Maritime Archaeology
u/Brain_Doc82
Neuropsychiatry
u/niallmd
Genetics | Gene Regulation | Bacterial Genetics
u/SnoLeopard
Veterinary Medicine | Microbiology | Pathology
u/Astrokiwi
Numerical Simulations | Galaxies | ISM

Related Communities

r/explainlikeimfive

18,396,480 members

r/LifeProTips

外围体育投注18,257,903 members

r/pics

25,525,084 members

r/space

17,206,132 members

r/gifs

20,299,953 members