I found an answer from www.quora.com

Since black holes consume light, and are therefore invisible, would it ...

Most black holes have a hard time catching anything to eat, because though massive ... it be possible for a spacecraft to fly through one without anyone noticing?

For more information, see Since black holes consume light, and are therefore invisible, would it ...

I found an answer from www.bbc.com

BBC - Earth - The strange fate of a person falling into a black hole

May 25, 2015 ... If you fell into a black hole, you might expect to die instantly. ... You can't shout to her, as there's no air in space, but you might try ... You can't turn around and escape the black hole, any more than you can turn around and travel back to .... knowing that eventually one or the other was going to have to give.

For more information, see BBC - Earth - The strange fate of a person falling into a black hole

I found an answer from www.smithsonianmag.com

Are Fast Radio Bursts from Alien Spacecraft? It's Unlikely, but ...

Mar 10, 2017 ... It's Unlikely, but Possible ... He noticed a weird phenomenon—a high-energy burst lasting just a few ... Few of them repeat, but not on a regular schedule. ... “ There is no known astronomical object that generates radio bursts at such a high ... around it or some unknown aspect of a supermassive black holes.

For more information, see Are Fast Radio Bursts from Alien Spacecraft? It's Unlikely, but ...

I found an answer from www.nationalgeographic.com

Milky Way Has 4 Billion Years to Live — But Our Sun Will Survive

Mar 24, 2014 ... The galaxies as we know them will not survive. In ... Then, the two galaxies will collide head-on and fly through one another, ... had no way of knowing whether Andromeda and the Milky Way would collide .... Six Things That Make Life on Earth Possible ..... Under their white fur, polar bears have black skin.

For more information, see Milky Way Has 4 Billion Years to Live — But Our Sun Will Survive

I found an answer from www.history.com

11 Things You Didn't Know About '2001: A Space Odyssey' - HISTORY

Apr 3, 2018 ... As the film lurched into existence—without a set plot line, much less a finished ... VIDEO: Why is Kubrick's '2001: A Space Odyssey' significant? ... In another incident, Kubrick refused to let Weston punch holes in the back of his space helmet, ... The mysterious black monolith began as a translucent Plexiglas ...

For more information, see 11 Things You Didn't Know About '2001: A Space Odyssey' - HISTORY

I found an answer from physics.stackexchange.com

black holes - Why can't we notice crossing an event horizon ...

Anybody can ask a question ... If the time of flight of the ball from Bob to Alice is greater than the ... In this option is the setup that it's impossible, Alice and Bob cannot pass ... is arbitrary close to a black hole horizon (at least without noticing). ... The black hole horizon is a teleological objecs, you should really ...

For more information, see black holes - Why can't we notice crossing an event horizon ...

I found an answer from www.scientificamerican.com

According to current physical theory, is it possible for a human being ...

As several respondents noted, we constantly travel through time--just forward, ... into this question have provided some evidence that the answer is no, but it has ... General Relativity that allow a person to follow a timeline that would result in her ... gravitational waves and black holes; the dramatic explosion of discoveries in ...

For more information, see According to current physical theory, is it possible for a human being ...

I found an answer from www.nasa.gov

Science | NASA

A. People have considered harnessing lightning for electrical power, but no serious .... If the cores have massive black holes, the systems can flare-up into quasar, .... In October 1998, NASA launched the Deep Space 1 spacecraft to perform an .... to have an exotic geometry and be a place where time travel is possible.

For more information, see Science | NASA

I found an answer from en.wikipedia.org

Interstellar travel - Wikipedia

Interstellar travel is the term used for crewed or uncrewed travel between stars or planetary ... However, in spite of the challenges, if or when interstellar travel is realised, .... This is because a slow spacecraft would probably be passed by another ..... a black hole starship offers some advantages compared to other possible ...

For more information, see Interstellar travel - Wikipedia

I found an answer from spaceplace.nasa.gov

How do we know dark matter exists if we can't see it?

We're used to thinking about the universe in terms of what we can see. ... we see stars, planets, and the Moon shining against the deep black background of space . ... also keeps Earth-orbiting spacecraft and even the Moon from flying away. ... right away that there must be wires holding him up, even if you couldn't see them.

For more information, see How do we know dark matter exists if we can't see it?