We are agreed on that. The size of the foreground and background figures in the paddoboy link can be measured to be the same by a ruler. Nevertheless...
I can't tell if this was directed to me but I did. Bob Clark
OK. But illusions of perspective can still hold in images. Look for example at the image at the link provided by paddoboy:...
I don't know if a picture would not show it "larger" since some optical illusions still work in photos....
A solution to "climate change", global green energy, routine space access, and a manned flight to Mars possible this decade? Possibly: Economical...
Recent advance in solar concentrators and lightweight solar sails mean we can use solar power rather than nuclear to power plasma engines. Then...
The full Moon sometimes looks huge when it's low on the horizon. I was wondering if the same effect would occur on the Moon if we saw a full phase...
The individual cost of a business jet could well be less than $50 million. Keep in mind Masten has knowledge of vertical takeoff and landing vehicles...
On another forum it was mentioned Dave Masten of Masten Space Systems in a SpaceVidcast video discussed adapting a Centaur upper stage to serve as a...
A manned lunar landing flight for less than $100 million in launch cost, assuming the Falcon Heavy really does hit the $1,000 per pound price point:...
Habitable and inhabitable, they are used interchangeably, mean capable of supporting life. They are not used to mean inhabited. Bob Clark
Speculation here that such an impact could make Mars habitable: Rush to Mars: Comet impact could make Red Planet inhabitable. Published time:...
Meteor expert Clark Chapman and former astronaut Rusty Schweickart urge U.S. military to re-initiate sharing of satellite detections of meteor...
Extraordinary video that shows how often we are visited by visitors from the sky ... An Asteroid's Parting Shot. By Phil Plait Posted Tuesday, Feb....
I've been informed by knowledgeable individuals that the Block I SLS likely will have greater payload than just 70 mT, though not as high as what I...
Interesting articles: NASA MSFC Says That SLS Performance Specs Fall Under ITAR. http://spaceref.com/news/viewnews.html?id=1697 Report:...
Active geysers have been observed in the south polar region of Mars: Martian Geysers. http://en.m.wikipedia.org/wiki/Martian_geyser A new...
Thanks for that Billy T. More entrants to the field increases competition which spurs innovation, which increases the chance of success in these...
A recent report suggests using the hydrogen tank of an upper stage for the SLS as a space station: Skylab II: A NASA 'Back to the Future' Concept to...
SLS for Return to the Moon by the 50th Anniversary of Apollo 11, page 2: Orion + SEV design....
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