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Desaru: Day 2

on June 23, 2019

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Rockets and their history

A rocket is anything that obtains thrust from a rocket engine. Common types include solid-fuel and liquid rockets. They work on Newton's third law - every action has an equal and opposite reaction. Rocket engines are the parts of the rockets that allows the rockets to obtain their thrust to allow them to lift up. They all require oxidiser as there is no oxygen for fuel to use to combust in space. The propellants are forced through the engine, and thanks to the igniter they light up and push the rocket. Solid-fuel rockets cannot be turned off, but they can be stored for years, useful for launching ICBMs. The first rocket-like things were first made in China a millennium ago.. In 1926, a certain Robert Goddard created the hoop skirt rocket. The first so-called "proper" rocket was created by Werner Von Braun. Space Race By NSSDC, NASA[1] - http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1957-001B , Public Domain, https://commons.wikimedia.org/w/index.php?curid=1129363 T...

Stellar Evolution Pt. 2

By NASA, ESA, P. Challis, and R. Kirshner (Harvard-Smithsonian Center for Astrophysics) - http://hubblesite.org/newscenter/archive/releases/2007/10/image/a/ (direct link), Public Domain, https://commons.wikimedia.org/w/index.php?curid=1948789 Supernovas A supernova happens when is a star at the end of its life. All of its matter rushes into its centre and becomes so compact that it either becomes a neutron star or black hole. The matter rebounds and a supernova occurs. Type Ia supernova A type Ia supernova happens when a white dwarf accretes matter from its binary companion. The white dwarf cannot go beyond 1.44 solar masses without reigniting itself due to the high pressures. In some cases, this causes a supernova. Type Ib supernova A type Ib supernova occurs when an extremely massive star collapses under its own gravity. Due to its massive size, it has fused hydrogen all the way to iron in a layered process. The star undergoing type Ib supernova would have lost its hydrogen layer ea...

Solar system missions

By NASA / JHU/APL - link The Messenger spacecraft was launched on 3 August 2004 and crashed into it on 30 April 2015. It found evidence of water ice on its poles. Public Domain, Wikimedia Commons Pioneer 12 was launched on 20 May 1978 and orbited Venus till 8 October 1992 by crashing into Venus. It measured and got data on Venus's atmosphere and solar wind. Public Domain, Wikimedia Commons Pioneer 13 was a mission consisting of 1 carrier and 3 small and 1 large atmospheric probe. It was launched on 8 August 1978 and the main carrier's last contact was on 9 December 1978. By NASA/JPL/Cornell University, Maas Digital LLC - Image link , Public Domain, Wikimedia Commons The Opportunity rover lasted 60 times longer than expected. It was launched in 7 July 2003 and lasted till 13 February 2019. By National Aeronautics and Space Administration (NASA) - Published source: "Spacecraft Icons" at NASA ScienceDirect source: Image hosted by smd-prod.s3.a...

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Desaru: Day 2

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