Big Bang Theory

‘The Big Bang theory’ is a theory that has become widely accepted because of its proficiency in simply explaining the three major cosmological observations. Those three observations are: the expansion of the universe as measured by the redshift of light released from galaxies, the presence of the cosmic background radiation and, the comparative amounts of hydrogen, helium, and deuterium in the universe.

The vast majority of astronomers believe that the Universe started with the Big Bang around 14 billion years ago. Before the Big Bang, it is theorised that the whole Universe was inside a ‘bubble’ that was hundreds of times smaller than a pinhead. This bubble was feverishly hot and much denser than the universe we know now.

Abruptly, the bubble

She was a gem of German astronomy due to her discovery of a comet. During her later years Maria also subsidized to founding the Berlin Academy of Science as a major centre of astronomy. Even as a child, Maria is interested in the sky. Once she completed her school years, Maria continued her astronomy studying by becoming a student, apprentice and assistant of Christopher Arnold, a self-taught astronomer who worked as a farmer. Through her work with Arnold, Maria became acquainted to one of the forerunning German astronomers at the time, Gottfried Kirch. Par their three-decade age gap, Maria and Gottfried got married in 1692, together they began a partnered career in astronomy. At the foundation of the Berlin Academy of Science in 1700, Gottfried was promoted to the potion of Academy’s astronomer. This meant Maria would serve as his unofficial but appreciated assistant. Due to Maria being a woman and it being the early 1700’s, she was forbidden to study at university, however, her husband continued to teach her and soon Maria’s expertise equalled and surpassed that of Gottfried’s. After a few years of work at the Berlin Academy of Science, Maria discovered a previously unknown comet. This dubbed her the first women to discover a comet, the comet was called ‘Comet of 1702’. To Maria’s misfortune, the discovery of the comet was put under her husband’s name, Gottfried Kirch. Maria was not even credited

The greatest danger of traveling to Mars is space radiation. When working on the space station, astronauts are exposed to over ten times the radiation that they would be on Earth. Overhead Earth’s protective atmosphere, radiation exposure may increase a person’s risk of cancer. Radiation can damage the bodies central nervous system, and cause both short term effects and long-term consequences, these effects manifest themselves as changed cognitive function, abridged motor function, and changes in behaviour. Radiation in space also causes radiation sickness that consequences in nausea, fatigue, vomiting, and starvation. One may develop deteriorating tissue diseases such as cataracts and circulatory problems. To tackle the risks, shielding, monitoring, and operational procedures control the levels of radiation, to keep astronauts at as lower risk as