Bio Sources

Sources: 

http://scienceworld.wolfram.com/biography/Peurbach.html

http://www.britannica.com/EBchecked/topic/454669/Georg-von-Peuerbach

http://encyclopedia2.thefreedictionary.com/Purbach%2c+Georg+Von

http://go.galegroup.com/ps/retrieve.do?sgHitCountType=None&sort=RELEVANCE&inPS=true&prodId=GVRL&userGroupName=fl_sarhs&tabID=T003&searchId=R1&resultListType=RESULT_LIST&contentSegment=&searchType=BasicSearchForm&currentPosition=4&contentSet=GALE%7CCX2830904929&&docId=GALE|CX2830904929&docType=GALE

http://go.galegroup.com/ps/retrieve.do?sgHitCountType=None&sort=RELEVANCE&inPS=true&prodId=GVRL&userGroupName=fl_sarhs&tabID=T003&searchId=R1&resultListType=RESULT_LIST&contentSegment=&searchType=BasicSearchForm&currentPosition=1&contentSet=GALE%7CCX3408501337&&docId=GALE|CX3408501337&docType=GALE

APOD 1.5

Saturn, a long known solar object in our system for hundreds of years, but even with how long humans have been observing it, and how far technology has come, we still have many things to discover about it. Such as not until the August of 2009 had we ever observed or had a picture of Saturn at its Equinox. The main issue being that, since Saturn's rings during its equinox point almost exactly at Earth while also at the sun, they usually just seem to disappear, so we have never had a chance to view all of Saturn during its equinox. But thanks to Cassini, the flagship satellite by NASA which was sent to Saturn in 1997, we now have a photo/ multiple photos of what Saturn's whole self looks like during its equinox. It is a surreal sight seeing the darkened rings, and the dramatic shadow cast behind the planet, and a humble reminder that even up to our modern years, we have much to learn and find out about the heavens above.

APOD 1.4

Potentially Habitable Moons

The concept of finding extraterrestrial life, or just finding another place in the universe to habitat has always been a fascinating study, a study known commonly as astrobiology. This study of finding new life and living places has led to new research suggesting that not only are there many moons that are easily inhabitable, such as Europa, Ganymede, etc but that there actually may be more inhabitable moons than there are inhabitable planets in the universe, at least within the stellar habitable zones that is. This concept was further emphasized just simply by observing certain moons within our own solar system alone, such as Europa, of which has a surface of majority water, like that of Ganymede's. Or from Enceladus, of which has water erupting from its surface in a warm climate. These examples show that, if we have this many in only our solar system, imagine just how many may be inhabitable in the entire universe. This leads to a likely expectation of more exomoon exploration in the future.

APOD 1.3

Auroras, beautiful displays of color in the sky caused by the plasma clouds emitted by our sun impacting the magnetosphere with ionized particles. Even more uncommon is a double auroral, which are sheets of auroras combined but yet separated. These seperations, or curtains, are caused by black auroras, or anti-auroras between the curtains. These are quite literally caused by the opposite effect of normal auroras, as they are negatively charged particles that are sucked out of Earth versus toward it along magnetic fields. In this specific photo, the Milky Way galaxy is seen right above the aurora, adding to the overall beauty of this peace located above a pretty city in Sweden.

APOD 1.2

Over Bangledesh in Tibet, China a large airglow appeared shining various colors in a target formation. This spectacular demonstration of chemiluminescence is caused by a combination of various chemicals and waves in the air, but this particular one was caused by gravity waves. Gravity waves are caused by air pressure raising air, but gravity pulling it back down. This scenario, like all airglows, can only happen over 80,000 kilometers above, or in this case, 90,000. And unlike Auroras which are the electrical variants of airglows, these are given their color by chemicals in the atmosphere, combined with gravity waves to give it the ripple effect.