Astronomy for Beginners Quotes

“An astronomer studies the energy fields of various celestial bodies, their behavior and how different celestial bodies affect or interact with one another.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Blue Dwarf Stars: these evolve from red dwarf stars after most of their hydrogen fuel is consumed.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“The second visit was by Messenger which went into orbit in 2011. Mapping was completed in 2013.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Mercury was first visited by the Mariner 10 between 1974 and 1975.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“In 2006, the IAU redefined the criteria for planets and stated that for a celestial body to be considered a planet it must: Orbit the sun Possess enough mass for self-gravity and Clear the neighborhood of planetesimals, dust and other similar objects.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“In 2003 the International Astronomical Union (IAU) stated that for a celestial body to be considered a planet, it must: Be ‘massive enough to be rounded by its own gravity’; Yet not be massive enough to cause thermonuclear fusion”; Not have any debris, dust, debris disks or young stars (also called planetesimals) in its neighborhood”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Dark Energy- it is believed that dark energy is what is causing the universe to expand at an accelerated rate.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Dark Matter- most scientists agree that 90 percent of the universe is constituted by dark matter. It cannot be seen, observed and it does not react to light.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Big Bang Theory- this theory suggests that the universe, and all within it, existed within one single body or point.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Cosmologists: they study the entire universe which means that they analyze all celestial bodies.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Supernovas- a supernova can be caused due to nuclear fusion in degenerate stars or by the ‘gravitational collapse of the core of a massive star’. Supernovas occur for a short amount of time and then fade over a time span of weeks or months.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Nebula- a nebula is, simply put, a cloud of dust consisting of gases”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Black Holes- Scientists claim a black hole is a place or phenomenon where gravity or the gravitational force is so powerful that nothing that enters it can escape.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Planetary astronomers: they focus on the birth and evolution of planets.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Galactic astronomers: these astronomers study the Milky Way.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Observational astronomers: these astronomers observe and study various celestial bodies. Theoretical astronomers: astronomers cannot document the evolution of celestial bodies, seeing how some of them take more than a century to evolve. So they rely on material collected by observational astronomers.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology

“Astronomy is the study of celestial bodies.”
― William James, Astronomy for Beginners: Ideal guide for beginners on astronomy, the Universe, planets and cosmology