Showing posts with label astronomy. Show all posts
Friday, September 16, 2011 ~ Have your say...
A Video of Vesta Rotating in Space
The animated gif (upper left) does not do this video justice - watch the high def video below to see the unprecendented level of photographic accuracy we now have available to look from the comfort of our own homes... while this giant rock is barelling through space. Pretty amazing.
NASA Jet Propulsion Laboratory California Institute of Technology
References:
Friday, September 9, 2011 ~ Have your say...
A Map of the 'Flat' Earth
In June of 2011, the Library of Congress acquired an old map which was created by Prof. Orlando Ferguson in 1893. The information it contains is a bit out of date... but it is very interesting to look at nonetheless.
The Flat Earth Society is a real organization led by a Virginian man named Daniel Shenton. Shenton believes in other scientific principles and facts, such as evolution and global warming, but he and his followers also believe that the Earth is a disc that you can fall off of. In other words, that it's flat.
"I haven't taken this position just to be difficult," Shenton told The Guardian news a while back. "To look around, the world does appear to be flat, so I think it is incumbent on others to prove decisively that it isn't. And I don't think that burden of proof has been met yet."
In fact, the validity of the organization as come in to question so often that it's immediately addressed on the first line of the FAQ:
Q: "Is this site a joke?"
A: This site is not a joke. We are actively promoting the Flat Earth movement worldwide. There are members who seriously believe the Earth is flat, and their research is located in Flat Earth Believers.
Read through their FAQ, as they "explain" the seasons, sunrises, sunsets, and other phenomena.
Here's a map of the flat Earth that they present:
I'm not sure where to start when debunking the notion of a flat Earth, because the theory seems so unrealistic. So I will only present one piece of evidence for the round Earth, and it's a simple picture:
'Nuff said.
- To see more images of Earth, our Pale Blue Dot, click here.
References:
http://www.thehistoryblog.com/archives/11651
http://theflatearthsociety.org/cms/
http://www.theflatearthsociety.org/forum/index.php?topic=11211.0
Saturday, September 3, 2011 ~ Have your say...
Milky Way Creation Simulation (video)
For decades, astrophysicists have attempted to recreate the formation of spiral galaxies such as the Milky Way as realistic as possible. Thursday, September 1, 2011 ~ Have your say...
Tempest Milky Way: a stunning example of time-lapsed photography
"One of the challenges in making this video, was trying to get good storm with stars shots. The opportunity doesn't come along very often, the storm has to be moving the right speed and the lightning can overexpose the long exposures. I had several opportunities this summer to get storm and star shots. In one instance, within a minute of picking up the camera and dolly, 70mph winds hit. One storm was perfect, it came straight towards the setup, then died right before it reached it."
Friday, August 19, 2011 ~ Have your say...
Astronaut Photographs Perseid Meteor... From Space
Monday, August 15, 2011 ~ Have your say...
The Moon Landing Hoax Debunked (again)
1 When the astronauts plant the flag, you can see it flapping as though it’s in a breeze. But there is no air or atmosphere on the moon… so how could this be?It's also important to note that the lunar surface is not flat. If an object is in a dip (say, a small crater), you will get a different shadow compared to an object next to it that is on a level surface. Still not convinced? This is easily testable at with a few small props, uneven ground, and a light source.
The moon's surface reflects sunlight, and its glare would have made stars difficult to see. Also, the astronauts photographed their lunar adventures using fast exposure settings, which would have limited incoming background light. According to Bad Astronomy, they were taking pictures at 1/150th or 1/250th of a second. With such a short exposure, the stars simply won’t show up on film. You can try this for yourself. Take a picture of Jupiter or Venus (since they are highly visible from Earth) on a clear night away from light pollution. You’ll have a hard time seeing them, if at all, and you certainly won’t see even the brightest stars. You need a long and steady exposure for that to work.
Kaysing's exact words, when quoted on this claim, were, ``Any human being traveling through the van Allen belt would have been rendered either extremely ill or actually killed by the radiation within a short time thereof.''
7 The astronauts' footprints are too clear for being made on a dry surface. Those footprints could only have been made in wet sand.
8 We are led to believe that only two astronauts walked on the moon at a time, yet in photographs such as the one below, where both are visible, there is no sign of a camera. So who took the picture?
10 After the “landing”, artifacts from the trip were supposedly left behind: part of the Eagle, the U.S. flag, and several other instruments and mementos. With instruments like the Hubble Space Telescope capable of peering into the distant of the universe, surely scientists should be able to see the various objects still on the moon. But no such pictures of these objects exist.Conspiracy theories like the Moon Landing Hoax can be debunked, torn apart, shredded, and thoroughly disproved with hard science every day, but that usually won’t make a difference to true believers. The Mythbusters, a television show on the Discovery network, dedicated an episode to the Moon Landing Hoax and tackled several parts of the myth. Like me, the cast members held no illusions that they would be able to sway the diehard moon hoax believer to the “other side”.
"The thing that I've found over the years is that there is always a certain segment of people out there who will refuse to believe despite overwhelming evidence. Those diehards will never be convinced, while everyone else will have fun watching us take on the hoax," said cast member Imahara.
Savage and Hyneman said they found similarities between the hoax and the other myths they have tested. "There seems to be a common tendency among conspiracy theorists, as well as among a lot of people with entrenched belief systems, to get stuck on an idea and never give up.
Conspiracy theories are not really a special category -- maybe you can call them myths, but I look at them as an obsession that people want to maintain, like being abducted by aliens, Bigfoot and so on. You can't really expect that reasonable evidence will change anyone's mind if they are determined," observed Hyneman.Wednesday, August 10, 2011 ~ Have your say...
Nemesis, Nibiru, Planet X, and The End of the World (in 2012)
Monday, July 18, 2011 ~ Have your say...
NASA's Dawn Spacecraft: An Infographic
On Saturday, NASA’s Dawn spacecraft arrived at the 330 mile wide asteroid, Vesta. It’s the first space probe to orbit a protoplanet in the asteroid belt.
Dawn will conduct a year-long study of Vesta where NASA hopes to gain an understanding of the origins and earliest conditions of the solar system. The research will also help determine why Vesta is the brightest asteroid in the solar system.
NASA chief, Charles Bolden said, “Dawn’s study of the asteroid Vesta marks a major scientific accomplishment and also points the way to the future destinations where people will travel in the coming years. President Obama has directed NASA to send astronauts to an asteroid by 2025, and Dawn is gathering crucial data that will inform that mission.”
Dawn will then visit the dwarf planet Ceres (arriving in 2015).
Here’s an infographic detailing Dawn’s mission:
Image Credit: Space.com: http://www.space.com/12279-nasa-dawn-asteroid-mission-works-infographic.html
Thursday, July 7, 2011 ~ Have your say...
First iPhones in Space: Final Shuttle Astronauts to Deliver $1 App
The app, SpaceLab for iOS, uses the iPhone 4′s in-built three-axis gyroscope to replace far more expensive custom-built equipment. It will measure altitude, the curvature of the Earth, and locate itself by looking for recognizable coastline via the iPhone camera. (Astronauts aboard the ISS will be taking the snapshots...)"
From the iTunes description... "The primary purpose of these experiments is to collect data for future flights, to improve the sensor accuracy and precision, and to demonstrate some of the basic capabilities intrinsic to iPhone but uniquely applied to the Low Earth Orbit (LEO) space environment."
Once the experiment and iPhones are returned to Earth and analyzed, it will be made available to users as part of a new release."
You can pick up the app here. Remarkable, I still haven't jumped on to the iPhone bandwagon... I have to resort to my second generation iPod Touch.
Monday, June 27, 2011 ~ Have your say...
Asteroid Just Barely Misses Earth... Asteroid 2011 MD: A Near-Earth Object
"An asteroid the size of a tour bus zipped by Earth today (June 27) in a flyby so close that the space rock was nearer to the planet than some satellites." At 5 to 20 metres wide, this guy would have burned up in the atmosphere yielding a magnificent light show, but probably wouldn't have caused any damage. It wasn't one of these asteroids below, but these ones would be ideal candidates for humans to visit so that we could learn more about them.
To see just how close this asteroid was to Earth, look check out this page: http://neo.jpl.nasa.gov/images/2011md_ca3.gif . Its distance was less than the diameter of the Earth... so yeah, very close!
Monday, May 30, 2011 ~ Have your say...
Why does the moon look bigger on the horizon?
Tuesday, May 24, 2011 ~ Have your say...
Shuttle Endeavor Photographed While Docked to the ISS
Saturday, April 23, 2011 ~ Have your say...
The Solar Dynamics Observatory: Year One Video Collage
I can't help but wonder what we'll discover in the future as our technology improves even further. Imagine what other stars look like? What about a red giant? White dwarf? Neutron star? Watching this video really puts things in perspective for me - I've watched it a dozen times, and can't help but feel that our planet is just so tiny, so insignificant, compared to the complexities and magnitudes of our solar system, galaxy, and universe. I can only imagine what the video for Year 2 will comprise.
Sunday, April 3, 2011 ~ Have your say...





























