• Can our space ships travel for even One light year?

    Best answer: We have the science but not the technology to travel to the Centauri binary stars 4.2 light years away. The science is in using a solar sail to propel the starship about 1/4 light speed for most of the journey. The rest is accelerating and then decelerating. At a steady all the way 1/4 light speed it would take... show more
    Best answer: We have the science but not the technology to travel to the Centauri binary stars 4.2 light years away. The science is in using a solar sail to propel the starship about 1/4 light speed for most of the journey. The rest is accelerating and then decelerating.

    At a steady all the way 1/4 light speed it would take the starship under 20 years to go one-way, counting acceleration and deceleration periods. Then another 20 to return, plus loiter time of, say one year, for exploration. So a young crew could travel 41 years round trip plus loiter time to and back from the Centauri stars.

    So the crew would need a self-sustaining environment, food and water, and other systems to support their physiological needs for 41 years. They would also need systems to support their emotional, religious, and mental needs over that long round trip.

    I think we have the science for that. The ISS and long under water tours in nuke submarines have taught us much about how to safely confine a crew in space for long periods.

    But we have neither the will nor the resources to actually build such a ship. So, no, we currently have no space ships that can carry a crew over one light year distance. We have some probes, but they're hardly spaceships.
    12 answers · Astronomy & Space · 23 hours ago
  • How to time travel?

    Best answer: The only physically possible way of being able to travel AHEAD of time, since we technically already are traveling through time by merely existing, is to travel faster than the speed of light. If you can find a way to travel faster than the speed of light, you can travel ahead into the future, probably be ahead of... show more
    Best answer: The only physically possible way of being able to travel AHEAD of time, since we technically already are traveling through time by merely existing, is to travel faster than the speed of light. If you can find a way to travel faster than the speed of light, you can travel ahead into the future, probably be ahead of us by hundreds of years. Time can only stay constant under the speed of light. Why do you think time cannot exist in a black hole? It is simply because the black hole’s gravitational pull is so strong that anything that gets torn into it will travel faster than the speed of light. Even light can’t escape a black hole. So... essentially, if you want to travel ahead in time, make a teleportation device that teleports people faster than the speed of light. (However, I don’t know if the human body can handle traveling at those speeds... doesn’t sound very safe)
    I’ll give you a fair warning though... there’s no way to travel back to the past, so before you do it, think twice.
    16 answers · Astronomy & Space · 2 days ago
  • Is there any proof that aliens exist?

    Best answer: The Universe is so overwhelmingly vast that I cannot imagine how there could not be more life out there somewhere. Now regarding contact, that will depend on how advanced a dominate species is on their planet and how they communicate with each other. Think about animals and how they are born with instincts, they... show more
    Best answer: The Universe is so overwhelmingly vast that I cannot imagine how there could not be more life out there somewhere. Now regarding contact, that will depend on how advanced a dominate species is on their planet and how they communicate with each other. Think about animals and how they are born with instincts, they just know what they are and what is dangerous etc. Almost as if they are born with some innate knowledge. Now what if there is a dominant species on a planet that is like us but is born already knowing how to communicate and how to survive and with the knowledge of their parents imbedded in their psyche? How would they communicate with us? We would be so different. They might not even use sound to communicate. But there is one universal language and that is mathematics, Mathematics would be the best way to communicate with aliens because "mathematics is the expression and quantification of basic logical concepts, and then it builds on those logical concepts to form increasingly complex concepts." "Mathematics is the most fundamental type of logic possible (in physics anyway), and therefore it is easy to reason that mathematics is the best way of expressing the universe."
    If there were proof of aliens I don't think for one minute we the public would be told about it. I cringe to think that we bring rocks back from other planets back to Earth. Even a tiny unseen alien bacteria, virus or rogue protein could kill everything on Earth simply by learning how to manipulate DNA. The Earth is protected by a very fiery magnetosphere but we bring these rocks back protected in capsules that aren't penetrated and so these rocks slip into our atmosphere. I hope those who travel in outer space are very careful. We don't want to meet the bad aliens, the small particles that don't communicate with us consciously but via our protein or DNA.
    15 answers · Astronomy & Space · 2 days ago
  • Gender is a clear Signal,Evolution stopped,An intermingle is required for Evolution to contnue,Do you think species will reverse to Assexual?

    Best answer: A Fossil is what remains of something that once lived
    Evolution got beyond the Assexual reproduction
    In most cases
    To be fair Sexual reproduction curtails Overbreeding
    Best answer: A Fossil is what remains of something that once lived
    Evolution got beyond the Assexual reproduction
    In most cases
    To be fair Sexual reproduction curtails Overbreeding
    18 answers · Biology · 2 days ago
  • How much is five ounces of wine?

    Best answer: 0.3125 lb (pounds)
    Best answer: 0.3125 lb (pounds)
    17 answers · Mathematics · 16 hours ago
  • Why when I look to see what mainstream science says about electric universe, they bash it, then I find articles about how they’ve found?

    ...things like an electric connection between Saturn and one of its moons via a plasma and another that says dark energy may not exist at all? These are things the Euniverse has already been saying.
    ...things like an electric connection between Saturn and one of its moons via a plasma and another that says dark energy may not exist at all? These are things the Euniverse has already been saying.
    5 answers · Astronomy & Space · 19 hours ago
  • What If Space Doesn't Go On Forever - What If You Just Go Further In The Past?

    When I laid my head on the pillow last night I started thinking about Space. Something I love is the question of why we go further in the past the more through space we go. I started thinking what if the question isn't how far does the Universe go - rather what if it just takes you more and more in the past... show more
    When I laid my head on the pillow last night I started thinking about Space. Something I love is the question of why we go further in the past the more through space we go. I started thinking what if the question isn't how far does the Universe go - rather what if it just takes you more and more in the past like a movie rewinding itself to the creation of the Big Bang. Where is there to go once you reach the fifth of a millisecond before the Big Bang? We don't know what happened then. How did that all start?
    13 answers · Astronomy & Space · 2 days ago
  • IS paris a country?

    15 answers · Geography · 2 days ago