AskScience AMA Series: We're scientists and engineers working on NASA's Lucy mission to explore Jupiter's Trojan Asteroids. Ask us anything! |
- AskScience AMA Series: We're scientists and engineers working on NASA's Lucy mission to explore Jupiter's Trojan Asteroids. Ask us anything!
- Isn't CO2 emission reduction without carbon capture somewhat pointless?
- Have any other planets experienced reversal of the magnetic poles?
- Fast charging: How do your charger knows what voltage to release?
- How do deciduous plants sense the change of seasons?
- Some carnivores have this notch near the front of their upper jaw that interrupts the tooth row. I can't seem to find any satisfying reason for why it's there. Anyone got an answer?
- Are there any positive effects of a volcano explosion?
- How did black holes at the size and mass of TON 618 even form? I know about the concept of quasi stars but still a black hole forming from such a star wouldnt even compare to TON 618
- How do furanocoumarin compounds activate the arachidonic acid cascade?
- When did the flu become endemic in society? I read that it was after the Spanish flu, is this true?
- How Often does Mercury Get Hit by Coronal Mass Ejections?
- What exactly happens in my body when I drink a "zero calorie" diet tea with sucralose? What does the body do with sucralose?
| Posted: 12 Oct 2021 01:00 AM PDT The Trojan asteroids are rocky worlds as old as our solar system, and they share an orbit with Jupiter around the Sun. They're thought to be remnants of the primordial material that formed the outer planets. On Oct. 16, NASA's Lucy mission is scheduled to launch from Cape Canaveral, Florida, to explore these small worlds for the first time. Lucy was named after the fossilized human ancestor (called "Lucy" by her discoverers) whose skeleton expanded our understanding of human evolution. The Lucy Mission hopes to expand our understanding of solar system evolution by visiting these 4.5-billion-year-old planetary "fossils." We are:
All about the Lucy mission: www.nasa.gov/lucy We'll be here from from 2-3 p.m. EDT (18-19 UT), ask us anything! Username: /u/NASA [link] [comments]  |
| Isn't CO2 emission reduction without carbon capture somewhat pointless? Posted: 12 Oct 2021 01:48 AM PDT So as far as I understand it the CO2 content of the air simply determines the rate of change of the earth's temperature. Right now the energy surplus from solar radiation on the earth is somewhere around 1 W/m², which leads to warming. If we hypothetically reduced our CO2 output to zero instantly, we'd still maintain the same CO2 atmosphere content and thus radioation surplus and the same rate of change, so the earth would still heat up at the current pace, right? Am I missing something? And if I'm not, isn't it then mandatory to also look into ways of reducing the rate of change of temperature, rather than only trying to reduce the pace at which the rate of change rises (=reducing emissions)? [link] [comments]  |
| Have any other planets experienced reversal of the magnetic poles? Posted: 11 Oct 2021 08:12 PM PDT |
| Fast charging: How do your charger knows what voltage to release? Posted: 12 Oct 2021 01:47 AM PDT So, fast charging has been a thing for a while now, and as far as I know there is no standard for it. So, what I keep thinking is, how does a particular charger knows that the phone plugged into it is compatible with the kind of fast charging voltage it is able to provide? Does it know? Thanks for coming here :) [link] [comments]  |
| How do deciduous plants sense the change of seasons? Posted: 11 Oct 2021 04:06 PM PDT How do deciduous plants 'know' that the seasons change? Do they sense the change in temperature to start shedding or growing leaves or do they have some kind of internal clock? If it is the change of temperature, what if the temperature of a particular season is not normal, for example if it keeps warm in autumn? [link] [comments]  |
| Posted: 11 Oct 2021 04:31 PM PDT The only examples I've found so far are in reptiles like crocodiles and a couple of dinosaurs like Spinosaurus and Dilophosaurus. I've seen it referred to as a "subnarial gap" in dinosaurs.It seems like it's there to make space for larger teeth in the lower jaw to poke up through an overbite but I'm curious as to why that kind of jaw shape would be advantageous. Perhaps something to do with catching fish? I really haven't a clue. EDIT: It's a new day and I've done a little more looking around for answers. Found a really interesting paper on fish dentition that suggests having larger teeth at the front of the lower jaw could be to assist in capturing elusive prey. That makes a good deal of sense to me at least. When an animal bites, it moves the lower jaw a lot more quickly than the upper one as it's not got an entire head attached to it. So some large teeth at the front of the lower jaw would likely be useful to puncture smaller prey during the bite and prevent them from escaping before the upper jaw engages. To have this provide a meaningful advantage for larger predators, the jaw has to be quite long (both for increased jaw speed and to make it significantly easier to catch with the front of the mouth than the back) and the prey has to be quite small (so that the greater bite force at the back of the jaw isn't needed to maintain a hold) so this morphology seems only likely to show up in fairly specific niches. I think I'm satisfied with this answer, but if anyone has something to add, or is unconvinced by this explanation, by all means say something. [link] [comments]  |
| Are there any positive effects of a volcano explosion? Posted: 11 Oct 2021 05:03 PM PDT Hello! I was wondering if there would be any positive effects of a volcano erupting, whether it may be on the environment, etc. Thanks so much! [link] [comments]  |
| Posted: 11 Oct 2021 10:31 AM PDT |
| How do furanocoumarin compounds activate the arachidonic acid cascade? Posted: 11 Oct 2021 02:37 PM PDT |
| When did the flu become endemic in society? I read that it was after the Spanish flu, is this true? Posted: 10 Oct 2021 07:06 PM PDT |
| How Often does Mercury Get Hit by Coronal Mass Ejections? Posted: 10 Oct 2021 01:02 PM PDT |
| Posted: 10 Oct 2021 02:03 PM PDT |
| You are subscribed to email updates from AskScience: Got Questions? Get Answers.. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
No comments:
Post a Comment