Statistiche

sabato 28 settembre 2019

Ancient Aliens: Thunderbird Sightings at Lake of the Devil (Season 8) | History


Source video: HISTORY

Tune in to Alien Invasion Week on History starting Monday 9/30 through Friday 10/4 for new Ancient Aliens, plus the premiere of In Search Of, new UFO Specials and More! Witnesses have reported a giant Thunderbird in the skies above California and local legend says that it came from a portal at the bottom of Lake Elizabeth, also known as the Lake of the Devil in this clip from Season 8, "Alien Transports." #AncientAliens Subscribe for more from Ancient Aliens and other great HISTORY shows: http://po.st/SubscribeToHistory Find out more about the show and watch full episodes on our site: http://po.st/AncientAliens Check out exclusive HISTORY content: History Newsletter: http://po.st/HistoryNewsletter Website - http://po.st/HistoryWeb Facebook - http://po.st/HistoryFacebook Twitter - http://po.st/HistoryTwitter HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

UFO Hunters: Alien Experiments at Secret Underground Base (Season 3) | History



 Source video: HISTORY

The UFO Hunters team investigates a secret underground base where the government reportedly carried out strange experiments in this clip from Season 3, "Undeground Alien Bases." #UFOHunters Subscribe for more from UFO Hunters and other great
 HISTORY shows: http://po.st/SubscribeToHistory
 Find out more about the show and watch full episodes on our site: http://po.st/ufo-hunters
Check out exclusive HISTORY content: History Newsletter: http://po.st/HistoryNewsletter Website - http://po.st/HistoryWeb
Facebook - http://po.st/HistoryFacebook Twitter - http://po.st/HistoryTwitter HISTORY® is the leading destination for award-winning original series and specials that connect viewers with history in an informative, immersive, and entertaining manner across all platforms. The network’s all-original programming slate features a roster of hit series, premium documentaries, and scripted event programming.

They Don't Want You To Know This! What's Really Going On Will Change Everything! 2019-2020



Source News: thirdphaseofmoon

This Evidence Exposes The Real Space Race Stream the Full Series Now http://bit.ly/SpaceProgramSecrets Only on Gaia

What This Man Experienced Will Amaze You! Witness of Another World (2019)




Source video: thirdphaseofmoon

An intimate documentary that intends to unveil the mystery of a spectacular close encounter case witnessed by a lonely gaucho. DIRECTED BY Alan Stivelman STARRING Jacques Vallee, Juan Perez, Alan Stivelman
 WEBSITE: https://www.witnessofanotherworld.com/ ON DIGITAL AND ON DEMAND OCTOBER 22, 2019: http://radi.al/WitnessOfAnotherWorld

Using 3-D models in the search for Mars life

Maps are handy for travel. But what if you’re traveling to a place never before visited? For the ExoMars mission, due to launch next summer, scientists have developed new 3-D models of the area to be explored, which may be an old Martian river delta.

Elevation lines on map.
Here’s a piece of one of the new 3-D models just created to help ESA’s Rosalind Franklin rover explore Mars in 2021. The models are so detailed that they show, for example, as dune ripples inside craters, as you see here. Image via TU Dortmund/ NASA/ JPL-Caltech/ Europlanet.


How do modern-day space explorers prepare to search an unknown terrain? Never mind that the explorers are robots, and that the preparers are space scientists and engineers. Next summer, an ambitious new mission to Mars is scheduled to launch. The ExoMars mission of the European Space Agency (ESA) will carry the robotic Rosalind Franklin rover to Mars. The rover will search for evidence of past Martian life in Oxia Planum, a large plain rich in clays and containing an old river delta. How do they prepare? A team of scientists at TU Dortmund University in Germany has created extremely detailed 3-D models of the landing location. These scientists said on September 16, 2019 that they want to use the models to understand the geography and geological characteristics of this unexplored region on Mars, and to help plan the path of the rover.
The 3-D models are called Digital Terrain Models (DTMs). They’re a variation of Digital Elevation Models (DEMs) used by space scientists to understand planets, moons and asteroids. These particular maps have a resolution of about 25 centimeters per pixel. One of scientists, Kay Wohlfarth, presented them at last week’s international meeting of astronomers in Geneva, Switzerland.
So how were the models created?

Colored elevation map.
One of the test 3-D models of terrain on Mars. Image via TU Dortmund/NASA/JPL-Caltech/Europlanet Society.

Colorful elevation map.
Another test 3-D models of terrain on Mars. Image via TU Dortmund/NASA/JPL-Caltech/Europlanet Society.

First, they use high-resolution imagery of Mars’ surface from the HiRISE camera on NASA’s Mars Reconnaissance Orbiter (MRO). That imagery is then applied to the classic stereo method of combining two images taken from slightly different angles, in order to create a 3D image of the landscape. But those kinds of stereo techniques can be limited when it comes to dusty and sandy surfaces – basically featureless – in locations like the Rosalind Franklin landing site, Oxia Planum. By necessity, the landing site is relatively flat to help ensure a safe landing.
The DTMs were then further enhanced by using a technique called Shape from Shading in which the intensity of reflected light in the image is translated into information on surface slopes. The slope data is combined with the stereo imagery, providing a much better estimate of the 3-D surface, while achieving the best resolution possible in the reconstructed landscape.
The resulting models give the scientists a much more detailed view of the landing region. As Wohlfarth explained:

 With the technique, even small-scale details such as dune ripples inside craters and rough bedrock can be reproduced.

Rover on Mars.
Artist’s illustration of the Rosalind Franklin rover on Mars, part of ESA’s ExoMars mission. Image via ESA/ATG medialab.


Marcel Hess, first author of the study, said:
We have taken special care over the interaction between light and the Martian surface. Areas that are tilted towards the sun appear brighter and areas that are facing away appear darker. Our approach uses a joint reflectance and atmospheric model that incorporates reflection by the surface as well as atmospheric effects that diffuse and scatter light.
These new models will be a great aid to the rover as it navigates the landscape, looking for the best places to study with its array of instruments. Not only will the rover examine rocks and soil, it will also be able to drill up to two meters (six feet) into the subsurface, searching for possible biosignatures, chemical traces of past life. Samples will be delivered to the on-board laboratory for analysis.
PanCam, with its stereo and high-resolution cameras, will provide detailed views of interesting features in both visible and near-infrared wavelengths. Spectrometers will determine what rocks are composed of, and how much they were affected by water.

Large drill in horizontal position.
The rover’s drill in a clean room on Earth, in the stowed position. The drill will be able to penetrate down to two meters (six feet) into the subsurface. Image via ESA.

According to Jorge Vago, ESA’s ExoMars rover project scientist:
Our rover has really taken shape. We have an incredibly powerful scientific payload to explore the surface and subsurface of Mars on our quest to find biosignatures.
ExoMars will be an exciting mission, and along with NASA’s upcoming 2020 rover, the first since the Viking mission in the 1970s/1980s to look directly for evidence of life. The rover is expected to launch sometime between July 26 and August 13, 2020 on a Russian Proton-M launcher, arriving at Mars in March 2021.
More information about ExoMars mission is available on the mission website.
Bottom line: New 3-D models of the Martian terrain will help the Rosalind Franklin rover search for life on Mars in 2021.

Paul Scott Anderson 





Second-ever interstellar object discovered in our solar system confirmed and named

A rare object entered our solar system last month and now astronomers have confirmed it is the second interstellar comet ever detected. It was given the name "2I/Borisov" on Tuesday, but researchers have no idea where it came from. 

On August 30, Ukrainian amateur astronomer Gennady Borisov discovered the object from the MARGO observatory in Crimea, temporarily naming it C/2019 Q4. The comet was discovered with a 0.65-meter telescope, built by Borisov himself.
Amateur and professional astronomers all over the world helped the IAU confirm details about the object. Observations from the group revealed it has an extremely hyperbolic orbit — meaning it is moving too fast to orbit the sun — confirming its origin as interstellar.

screen-shot-2019-09-24-at-3-09-02-pm.png
An image of 2I/Borisov obtained using the Gemini Multi-Object Spectrograph on the Gemini North Telescope on Hawaii's Maunakea.  Gemini Observatory


"The orbit is now sufficiently well known and the object is unambiguously interstellar in origin;
 it has received its final designation as the second interstellar object, 2I," the IAU said in a press release Tuesday. "In this case, the IAU has decided to follow the tradition of naming cometary
objects after their discoverers, so the object has been named 2I/Borisov."
Its visibly short tail and "fuzzy" appearance confirm the object's status as a comet. Astronomers at the University of Hawaii estimate it to be between 1.2 and 10 miles across and will be closest to the sun on December 7.
 

"The comet's current velocity is high, about 93,000 mph, which is well above the typical velocities of objects orbiting the Sun at that distance," said Davide Farnocchia from NASA's Jet Propulsion Laboratory. "The high velocity indicates not only that the object likely originated from outside our solar system, but also that it will leave and head back to interstellar space."
The comet is still headed towards Earth, but we don't need to worry about it colliding — it won't get any closer than 190 million miles, according to NASA's JPL. Scientists will spend the next few months studying the comet before it returns to the vastness of space.
"The object will peak in brightness in mid-December and continue to be observable with moderate-size telescopes until April 2020," said Farnocchia. "After that, it will only be observable with larger professional telescopes through October 2020."
Astronomers weren't given that necessary time to study the first-ever interstellar object, 1I/'Oumuamua, when it was discovered leaving our solar system in 2017. Now both amateur and professional astronomers hope to further pinpoint the size, rotation and trajectory of 2I/Borisov before it's gone forever.

Sophie Lewis



Source News