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  2. List of spaceflight-related accidents and incidents - Wikipedia

    en.wikipedia.org/wiki/List_of_spaceflight...

    Three of the flights had flown above the Kármán line (edge of space), and one was intended to do so. In each of these accidents the entire crew was killed. As of December 2023, a total of 676 people have flown into space and 19 of them have died. This sets the current statistical fatality rate at 2.8 percent.

  3. Effect of spaceflight on the human body - Wikipedia

    en.wikipedia.org/wiki/Effect_of_spaceflight_on...

    Space traveler's eyesight can become blurry after too much time in space. [ 86 ] [ 87 ] Another effect is known as cosmic ray visual phenomena . [a] NASA survey of 300 male and female astronauts, about 23 percent of short-flight and 49 percent of long-flight astronauts said they had experienced problems with both near and distance vision during ...

  4. Quasar - Wikipedia

    en.wikipedia.org/wiki/Quasar

    Eventually, starting from about the 1970s, many lines of evidence (including the first X-ray space observatories, knowledge of black holes and modern models of cosmology) gradually demonstrated that the quasar redshifts are genuine and due to the expansion of space, that quasars are in fact as powerful and as distant as Schmidt and some other ...

  5. 10 weird things that can kill you almost instantly - AOL

    www.aol.com/news/2016-03-13-10-weird-things-that...

    Most of us know to be cautious of sharks and lightning, but, in reality, there are some rather big dangers out there that often go unacknowledged. Here are 10 weird things that can kill you almost ...

  6. List of accidents and incidents involving the International ...

    en.wikipedia.org/wiki/List_of_accidents_and...

    The International Space Station, as seen by a visiting spacecraft in 2021. This article is a list of accidents and incidents related to the International Space Station (ISS). It includes mishaps occurring on board the ISS, flights to and from the space station, as well as other program related incidents.

  7. Illness and injuries during spaceflight - Wikipedia

    en.wikipedia.org/wiki/Illness_and_injuries...

    Illnesses and injuries during space missions are a range of medical conditions and injuries that may occur during space flights. Some of these medical conditions occur due to the changes withstood by the human body during space flight itself , while others are injuries that could have occurred on Earth's surface.

  8. Aliens could conquer Earth by following 'dangerous' maps sent ...

    www.aol.com/news/2017-08-16-aliens-could-conquer...

    One of the scientists who helped design maps to show Earth’s location 40 years ago, is saying they could be dangerous for humankind. Seriously.

  9. List of space debris producing events - Wikipedia

    en.wikipedia.org/wiki/List_of_space_debris...

    Also, about sixteen old Soviet nuclear space reactors are known to have released an estimated 100,000 NaK liquid metal coolant droplets 800–900 km up, [5] which range in size from 1 – 6 cm. [5] The greatest risk to space missions is from untracked debris between 1 and 10 cm in size. [ 1 ]