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astronomy Creation/evolution Physics

Genesis mission to the sun: Did it confirm the nebular theory of formation of the solar system?

The Genesis spacecraft mission, launched in August 2001 by NASA, was designed to observe the solar wind, particles coming from the sun, entrap a sample of those particles on substrates and safely return them to Earth. The spacecraft travelled to a point about 1.5 million kilometers (or about 1 million miles) from Earth called Lagrange point, L1, where the gravitational force of the earth is matched by that of the sun. At this location the Genesis spacecraft was well outside of Earth’s atmosphere and magnetic environment, allowing it to collect a ‘pristine’ sample of the solar wind. Genesis’ overall flight path resembled a series of loops (Fig. 1): first it circled five times around L1, called Halo orbit, where it remained for 850 days, then it moved back for a short loop around the opposite Lagrange point, L2, in order to position the spacecraft for a daylight return to Earth.

Figure 1: Genesis spacecraft mission trajectory. Credit: NASA/JPL

On board the spacecraft, ions from the solar-wind impacted the collectors at speeds over 200 km/sec and buried themselves in specially-selected materials. These samples were sealed in enclosures for their safe return to Earth in a sample-return capsule (SRC). Then during the return-to-Earth stage something went horribly wrong. On NASA’s Genesis Search for Origins website it is described as follows.1

On 8 September 2004 the SRC entered Earth’s atmosphere as planned, but its gravity switches were oriented incorrectly as the result of a design error and the parachute system failed to deploy. The high-speed wreck compromised the SRC and shattered many of the Genesis collectors.

The samples were scattered and shattered. But all was not lost it seemed.

However, the Genesis Preliminary Examination Team was able to show that, because the solar-wind ions were buried beneath the surface of the collectors, it is possible to detect and quantify elements in the solar-wind.1

Composition of original solar nebula

Thus in March 2005, Johnson Space Center curatorial staff started allocating solar-wind collectors to the international scientific community to see what could be determined from those samples. The purpose was to glean information on the composition of the solar wind, and hence to determine the chemical and isotopic composition of the original solar nebula which it is alleged formed our solar system. See Fig. 2.

Categories
Age of the Earth Creation/evolution History Science

Hell on Earth?

NASA’s Astronomy Picture of the Day on August 5th 2014 was a picture titled Hadeon Earth. It is a picture of what the planet Earth allegedly looked like four billion years ago. But how does any one know what it looked like back then? Were they there to take this picture? No of course not. It is based on a just-so story. That story is claimed tobe  backed by scientific evidence but it is more backed by the faith that the scientists have in science–which really is scientism. Scientism is the belief that science alone can eventually answer all questions, reveal all truth even reveal the unobserved history of our planet back 4 billion years.

HadeanEarth_swri_960
Figure 1: Hadeon Earth, 4 billion years ago. Illustration Credit: Simone Marchi (SwRI), SSERVI, NASA

The explanation with the picture on the NASA website reads (my emphases added):

Explanation: No place on Earth was safe. Four billion years ago, during the Hadean eon [named because of the high surface temperatures like Hell, a biblical reference], our Solar System was a dangerous shooting gallery of large and dangerous rocks and ice chunks. Recent examination of lunar and Earth bombardment data indicate that the entire surface of the Earth underwent piecemeal upheavals, hiding our globe’s ancient geologic history, and creating a battered world with no remaining familiar land masses. The rain of devastation made it difficult for any life to survive, although bacteria that could endure high temperatures had the best chance. Oceans thought to have formed during this epoch would boil away after particularly heavy impacts, only to reform again. The above artist’s illustration depicts how Earth might have looked during this epoch, with circular impact features dotting the daylight side, and hot lava flows visible in the night. One billion years later, in a calmer Solar System, Earth’s first supercontinent formed.