No light has no mass. This is one of the fundamental aspect of modern physics.
time has a speed which gotta be bs.
Causality and information have a speed, which is the same as light. I guess you could call it a "speed of time".
Are you talking about mesas? Those are pretty conclusively natural geology formations without any biological origins. There are zero evidences that massive trees existed and biologically it seems impossible that such massive trees could have ever existed. The maximum possible height of a tree is estimate around 130m.
I am really not sure where you saw that those could possibly be fossilized tree stumps.
Yeah they have been banned now
You cant lock the speed of something that doesent have mass, can you?
Light doesn't have mass and has a speed.
You can think of the speed of gravity as the time it gets for a disturbance to propagate through space-time.
Some launch companies only go to LEO, like Rocketlab
Rocket lab has sent a spacecraft to the Moon using their rocket and transfer vehicle and has contracts to launch further interplanetary missions.
Yes, we have had an epidemic of those AI bots. Luckily this one is very badly programmed. But please if you spot them before us it really helps if you can report their comments.
From the SpaceX filing they think it will most likely break open and sink when it tips over. And IIRC if it doesn't they plan to sink it in place as recovery would be expensive and dangerous.
likely in orbital mechanics or radiation hardening of circuits or mission specific things
The vast majority of those will be engineers too.
Minor propellant loading anomalies are pretty common yeah.
Damn that's a serious mileage to average 120km for 3 weeks straight.
Yes, light intensity would decrease with the square of the distance. So if it was 2 times further away the light would be 4 times weaker.
Yeah it's a strange historical thing. At the dawn of commercial spacecraft the rules for radio frequency allocation and broadcasting were way more comprehensive than anything about spaceflight itself so most of the spacecraft licensing paperwork got tacked into getting radio frequency licenses. And as time progressed more and more spaceflight related stuff got added to the radio licensing, like debris risk for example.
People are trying to rationalize that somewhat but it's not that straightforward.
No, most people learn by studying the topic in school and then applying what they studied. People who achieve high technical levels without a degree like Joe are very much the exception.
Also most engineering degrees give you the opportunity to get involved in university clubs where you can do hands on things without spending personal money. If you want to be involved in rockets professionally a degree will be incredibly helpful, if not mandatory in a lot of cases.
What is your goal? do you just want to do that as a hobby or do you want to do it professionally at some point?
At this age the best for you is probably to grab an engineering degree. Get an aerospace, mechanical or electrical engineering degree from whatever university you have access to where you live.
Openstreet map, j'utilise l'apply OSMand, a les points d'eau et les magasins en offline. J'ai configuré un mode balade vélo qui met les pistes cyclables, les point d'eau publiques, les superettes (il y a même les horaires!) et les campings sur la carte. C'est super utile en vadrouille, surtout à l'étranger ou tu sais pas si la supérette du village est ouverte de midi à deux, ou s'il y a une fontaine publique sur la place principale.
Avec une bonne batterie externe tu peux faire presque une semaine. En général j'amène un bon chargeur et recharge soit avec les voisins, dans les toilettes ou quand je m'arrête dans un resto ou un café.
Mon conseil c'est d'acheter un chargeur haute puissance (30W USB PD == power delivery) si tu as un téléphone ou une batterie compatible. Ca te change vraiment la vie quand tu peux faire 50% de charge en moins de 30min.
Je préconise aussi de laisser le téléphone en mode avion et économie d'énergie pendant la journée.
OP is a known liar. The vast majority of engineering clubs in any schools will take you in as long as you show up semi-regularly and are not an asshole to other team members.
He always spam the same kind of subreddits with the same kinds of topics (Engineering jobs, health related issues, not being able to get into the military, getting rejected from clubs).
Honestly I don't see a lot of interest from our user base. Most people who are posting about jobs are fresh grads. But I would be happy to implement one if I am proven wrong.
This is an issue that is a bit overblown in most pop-science articles. First atmosphere blocks a lot of the radiation. Even the tenuous atmosphere of Mars is enough to bring the dose rate lower than on board ISS (about 80% IIRC) in Martian low lands. If on top of that if you get people to work underground or in sheltered areas it is very manageable.
For the journey there the total dose is not that crazy. Associated cancer risk is less than smoking cigarettes. The main challenge is to deal with solar eruptions where you would need a "storm shelter". NASA has looked at a lot of design, mostly things like water tanks with a space in the middle. With that kind of system it's very survivable.
Ask you academic advisor.
8t is the mass of the spaceplane, the max payload they can release is probably a few hundred kg. And the X37-B has not dropped any EO "spysat" as far as we know.
Light is made of photons, and photons do not have mass. This is the introductory paragraph of the wiki article https://en.wikipedia.org/wiki/Photon
All Space Questions thread for week of May 26, 2024
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