Re: What is the best evidence for or against UFOs?

On 9/22/2025 5:16 PM, Vincent Maycock wrote:
> On Mon, 22 Sep 2025 13:51:35 -0500, Dawn Flood
> <[email protected]> wrote:
> 
>> On 9/21/2025 10:41 PM, Vincent Maycock wrote:
>>> On Sun, 21 Sep 2025 19:25:55 -0500, Dawn Flood
> <snip>
>>>> I would have to take issue even with unmanned space probes, all of which
>>>> require some energy to function, even if they are sitting in standby
>>>> mode.  Even the PCBs in the spacecraft will degrade over time, as it
>>>> would take tens of thousands of years for one to travel the distance to
>>>> the nearest star (other than our Sun), Proxima Centauri.  When (and if)
>>>> such a probe arrived, it would be completely dead.
>>>>
>>>> Dawn
>>>
>>> Have you taken time dilation into account?
>>
>> I think that's irrelevant, because, getting a spacecraft up to 90% (or
>> more) of the speed of light would require enormous amounts of energy,
>> and an equal amount of energy to slow the thing down.  What would be the
>> source of this energy, especially, that which is needed for the slow-down?
>>
>> Dawn
> 
> Right.   I was just saying that *if* rockets could reach relativistic
> speeds, *then* long life spans for the astronauts would not be a
> problem.

Agreed.  Of course, their rocket would, at those speeds, need to avoid 
colliding with anything!