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Helio's latest activity
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Helio
reacted to
Ken Fabian's post
in the thread
Move in Space without mass exchange
with
Like
.
Like Questioner said - the center of mass won't move. You can make your contraption rotate, from equivalent counter-rotation within the...
Sep 10, 2024
Helio
reacted to
billslugg's post
in the thread
Move in Space without mass exchange
with
Like
.
The assembly will not rotate about the motor axis, but around the assembly's center of mass.
Sep 10, 2024
Helio
replied to the thread
Move in Space without mass exchange
.
Is this somehow different than how gyro motors work for spacecraft, especially space telescopes? Gyroscopes
Sep 8, 2024
Helio
reacted to
Unclear Engineer's post
in the thread
NASA spacecraft captures 1st photo of its giant solar sail while tumbling in space
with
Like
.
And it is not just a push in one direction. By angling the sail to be off-perpendicular to the direction of the incoming light, the...
Sep 7, 2024
Helio
replied to the thread
NASA spacecraft captures 1st photo of its giant solar sail while tumbling in space
.
And don't forget light sail propulsion comes with a 2 for 1 special. :) The momentum of the photon pushes the sail when it impacts it...
Sep 7, 2024
Helio
reacted to
Catastrophe's post
in the thread
More on the Big Bang - what was before t = 0?
with
Like
.
I didn't originate that. I was quoting billslugg More on the Big Bang #5.
Sep 6, 2024
Helio
replied to the thread
NASA's solar sail spacecraft is visible in the night sky. Here's how to see it
.
FWIW, my little mag. equations show as max. of 0.44 magnitude. I've seen one report it was about 0 mag. and another stating its maximum...
Sep 6, 2024
Helio
replied to the thread
Belief in alien visits to Earth is spiraling out of control – here's why that's so dangerous
.
I've been having fun reading a number of books to build my knowledge of just how the BBT got its birth. The astronomy, actually the...
Sep 6, 2024
Helio
reacted to
Unclear Engineer's post
in the thread
Belief in alien visits to Earth is spiraling out of control – here's why that's so dangerous
with
Like
.
I think the cause and effect are being reversed in the article. I think it is the misbehaviors of our politicians and media moguls...
Sep 6, 2024
Helio
replied to the thread
More on the Big Bang - what was before t = 0?
.
I keep thinking about what Newton faced. He admitted he had no idea of what constitutes gravity. But he did know its behavior, and...
Sep 5, 2024
Helio
replied to the thread
A multi-faceted legend...
.
Best wishes Brian May!
Sep 4, 2024
Helio
replied to the thread
Books of interest
.
The Spanish Inquisition was the most brutal, AFAIK. The Pope was under pressure by Spain to be “more righteous” with the Italian...
Sep 4, 2024
Helio
replied to the thread
Books of interest
.
Yes. His Dialogue book ended in making Simplicio look foolish. This more than ended their long term friendship. Galileo was...
Sep 4, 2024
Helio
reacted to
billslugg's post
in the thread
Books of interest
with
Like
.
Gallileo was under house arrest the last few years of his life. Pope Urban did it because Gallileo wrote as fact, not theory, that the...
Sep 4, 2024
Helio
replied to the thread
Books of interest
.
That Socialist site has many errors... Bruno had some great ideas, some, in fact, were held by a few cardinals, including, the Cardinal...
Sep 3, 2024
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