News
Welcome to the News community!
Rules:
1. Be civil
Attack the argument, not the person. No racism/sexism/bigotry. Good faith argumentation only. This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban. Do not respond to rule-breaking content; report it and move on.
2. All posts should contain a source (url) that is as reliable and unbiased as possible and must only contain one link.
Obvious right or left wing sources will be removed at the mods discretion. We have an actively updated blocklist, which you can see here: https://lemmy.world/post/2246130 if you feel like any website is missing, contact the mods. Supporting links can be added in comments or posted seperately but not to the post body.
3. No bots, spam or self-promotion.
Only approved bots, which follow the guidelines for bots set by the instance, are allowed.
4. Post titles should be the same as the article used as source.
Posts which titles don’t match the source won’t be removed, but the autoMod will notify you, and if your title misrepresents the original article, the post will be deleted. If the site changed their headline, the bot might still contact you, just ignore it, we won’t delete your post.
5. Only recent news is allowed.
Posts must be news from the most recent 30 days.
6. All posts must be news articles.
No opinion pieces, Listicles, editorials or celebrity gossip is allowed. All posts will be judged on a case-by-case basis.
7. No duplicate posts.
If a source you used was already posted by someone else, the autoMod will leave a message. Please remove your post if the autoMod is correct. If the post that matches your post is very old, we refer you to rule 5.
8. Misinformation is prohibited.
Misinformation / propaganda is strictly prohibited. Any comment or post containing or linking to misinformation will be removed. If you feel that your post has been removed in error, credible sources must be provided.
9. No link shorteners.
The auto mod will contact you if a link shortener is detected, please delete your post if they are right.
10. Don't copy entire article in your post body
For copyright reasons, you are not allowed to copy an entire article into your post body. This is an instance wide rule, that is strictly enforced in this community.
view the rest of the comments
When sending probes to Mars or other rocky bodies, NASA is very careful about biological contamination. They don't want to seed the planet with some extremophile, or contaminate their own samples and mistakenly think it's native life.
When SpaceX wants to go to Mars and is also doing this shit, why should we trust them to take the same care?
Planetary Protection is one of my absolute FAVORITE can of worms!! Obviously it is a good idea to be careful and mindful, but I personally believe that NASA's current policies are complete overkill.
Let's think this through. Why don't we want to bring earth life to another world?
Maybe because then we won't be able to tell whether it is indigenous or not? Baloney! Imagine you accidentally bring a lizard to an island that doesn't have them. If it is indigenous, there would be evidence of them being there in the past, through fossils or otherwise!
Maybe we don't want to infect any life that is on that other planet, that earth life could take over that ecosystem like an invasive species? Astronomically unlikely. All earth life is evolved to live in its specific environment and to interact with the species with which it has evolved alongside. As such, totally unrelated organisms form different planets would be so completely alien to each other that they would be unlikely to interact to begin with. Additionally Mars, for example, definitively has no macro-fauna or flora. As such, any possible microbes on Mars would be completely at a loss on how to interact with humans or indeed any earth life.
Finally, Earth and Mars, for example, exchange ~500 kilograms of material every year. Analysis shows that some of that material never exceeded a temperature high enough for sterilization. Thus, if there was any life on mars, it would have reached us by now, living in our biosphere along with us.
Anyways I'm a big nerd and I hope this stuff is interesting!
https://arstechnica.com/science/2017/06/mars-enthusiast-planetary-protection-a-racket-should-be-largely-ignored/
If you were to pick out any one microorganism and try to get it to grow on Mars without any support, you're right that it would probably die off. If you were to take a pile of random dirt full of microorganisms and drop it on Mars, they would also probably all die off. But if you keep doing this a lot with dirt and rocks from many different environments on Earth, you may eventually find one that thrives.
There are organisms that carve out some tiny evolutionary niche until they have just the right conditions, and then explode. For example, Ideonella sakaiensis eats PET plastics. It was sitting around doing its thing for millions or billions of years, and then we gave it a place to thrive with all our plastic junk.
There are places on Earth that have some similarities to Mars. It's quite possible something would survive there.
I agree completely! Life is so cool. I would also say that we are a very, very long way from sending tons of dirt to Mars, but current probes are essentially sterilized, which adds billions to their cost, and for what?