One thought on “Why Isn’t Anyone Seriously Challenging The Big Bang?

  1. Arti says:

    The farther away a spacecraft is, it’s harder to contact, it takes longer to contact it, and it requires more energy to send-or-receive the same signal. The farther away a spacecraft is from you, the farther a signal that you send has to travel before it reaches it, the longer it takes to get there, and the lower in power that signal is when it arrives. If a spacecraft is twice as distant as another, the distance to it is twice as great, the time it takes a light signal to travel to it is twice as great, and the signal power that it receives is only one-fourth as great, since light signals spread out in the two dimensions perpendicular to the spacecraft’s line-of-sight.

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