Some space objects are visible to the human eye.
... would point almost exactly to a star called Polaris, or the North Star. If you were standing at the North Pole, Polaris would be directly over your head. As Earth rotates through the night, the stars close to Polaris seem to move in circles around it. Although not the brightest star in the sky, Pola ...
... would point almost exactly to a star called Polaris, or the North Star. If you were standing at the North Pole, Polaris would be directly over your head. As Earth rotates through the night, the stars close to Polaris seem to move in circles around it. Although not the brightest star in the sky, Pola ...
Astronomy
... A contracting cloud is called a protostar. Pressure and temperature increase. When the contracting gas and dust becomes so hot that nuclear fusion begins, a star is born!! ...
... A contracting cloud is called a protostar. Pressure and temperature increase. When the contracting gas and dust becomes so hot that nuclear fusion begins, a star is born!! ...
Powerpoint for today
... B: Blown to bits by a nearby supernova. C: Stripped away from the Sun by an encounter with another star in 1015 years. D: Blown to bits by silly humans with atomic bombs. ...
... B: Blown to bits by a nearby supernova. C: Stripped away from the Sun by an encounter with another star in 1015 years. D: Blown to bits by silly humans with atomic bombs. ...
mass of star
... B: Blown to bits by a nearby supernova. C: Stripped away from the Sun by an encounter with another star in 1015 years. D: Blown to bits by silly humans with atomic bombs. ...
... B: Blown to bits by a nearby supernova. C: Stripped away from the Sun by an encounter with another star in 1015 years. D: Blown to bits by silly humans with atomic bombs. ...
2nd Semester Review
... You are stopped at a traffic light. An ambulence approaches you from behind with a speed of 18 m/s. The siren produces a sound frequecy of 955 Hz. The speed of sound is 343 m/s. What is the frequency you hear? ...
... You are stopped at a traffic light. An ambulence approaches you from behind with a speed of 18 m/s. The siren produces a sound frequecy of 955 Hz. The speed of sound is 343 m/s. What is the frequency you hear? ...
3 rd stage of a star`s life = red giant
... Small, hot star made from the leftover core of a star ...
... Small, hot star made from the leftover core of a star ...
Epsilon Aurigae Mystery and Opportunity
... As if that weren’t enough… • Precise measurements out of eclipse revealed a quasi-periodic low amplitude variation of 96 days from 1984-87. • During the 2003-2004 observing season this variation had sped up to 71 days. • In 2007-2008 the period became 65 days. ...
... As if that weren’t enough… • Precise measurements out of eclipse revealed a quasi-periodic low amplitude variation of 96 days from 1984-87. • During the 2003-2004 observing season this variation had sped up to 71 days. • In 2007-2008 the period became 65 days. ...
The homogeneous and isotropic universe: Cosmology
... The age of the universe? Hubble’s constant H0 = 100h kms-1Mpc-1 where h =0.72 ± 0.08 The units are a little unusual so on converting kilometres into parsecs and converting seconds to years we find the Hubble time ...
... The age of the universe? Hubble’s constant H0 = 100h kms-1Mpc-1 where h =0.72 ± 0.08 The units are a little unusual so on converting kilometres into parsecs and converting seconds to years we find the Hubble time ...
Comets, Asteroids, and Meteors
... Asteroids • Not all asteroids are located in the asteroids belt and can pass near Earth • Jupiter’s gravity kept the asteroids from forming a planet • Some asteroids orbit just before and after Jupiter • Largest asteroid, Ceres, is 580 mi across but most are less than a few miles across ...
... Asteroids • Not all asteroids are located in the asteroids belt and can pass near Earth • Jupiter’s gravity kept the asteroids from forming a planet • Some asteroids orbit just before and after Jupiter • Largest asteroid, Ceres, is 580 mi across but most are less than a few miles across ...
Presentation available here - Lunar and Planetary Institute
... One of the greatest challenges to astrophysics now is to understand the nature of the Dark Energy that drives the acceleration. The dark energy is probably a field (like a magnetic field, but different), but it is 120 orders of magnitude smaller than physicists would expect. No current theory of phy ...
... One of the greatest challenges to astrophysics now is to understand the nature of the Dark Energy that drives the acceleration. The dark energy is probably a field (like a magnetic field, but different), but it is 120 orders of magnitude smaller than physicists would expect. No current theory of phy ...
Some Scientific Evidences
... complexity. An answer of light energy input from the sun caused a decrease in entropy is unfounded and impossible. i.e. to capture light energy into useable energy requires the mechanism already present in the organism--i.e. photosynthetic cells in plants and pigmentation in human skin. With the lig ...
... complexity. An answer of light energy input from the sun caused a decrease in entropy is unfounded and impossible. i.e. to capture light energy into useable energy requires the mechanism already present in the organism--i.e. photosynthetic cells in plants and pigmentation in human skin. With the lig ...
Life in the Universe
... with them. •Human (170cm) with a speed of about 1m/sec with 70 years of lifetime 1 billion times of its body size… •Nuclei of size 10-13 cm with speed of 1000 km/sec and lifetime of 10-15 second travel distance = 10-15 sec*1000 km/sec = 10-12 km = 1 million times of its body size! ...
... with them. •Human (170cm) with a speed of about 1m/sec with 70 years of lifetime 1 billion times of its body size… •Nuclei of size 10-13 cm with speed of 1000 km/sec and lifetime of 10-15 second travel distance = 10-15 sec*1000 km/sec = 10-12 km = 1 million times of its body size! ...
superbubbles vs super-galactic winds
... injected back into the ISM, during the 4 ×107 years that the SN phase lasts. From these, almost 40,000 M will be in oxygen ions and less than 1000 M in iron (see Silich et al. 2001). One of the features of the stellar synthesis models regarding the energetics of star clusters is that they fortunat ...
... injected back into the ISM, during the 4 ×107 years that the SN phase lasts. From these, almost 40,000 M will be in oxygen ions and less than 1000 M in iron (see Silich et al. 2001). One of the features of the stellar synthesis models regarding the energetics of star clusters is that they fortunat ...
Unit 7 Astronomy
... create their energy through 1. Energy: Stars __________________________ _________________________________________ the process of nuclear fusion. stars are big exploding balls of 2. Composition: _____________________ _________________________________________ gas, mostly hydrogen and helium. of lines ...
... create their energy through 1. Energy: Stars __________________________ _________________________________________ the process of nuclear fusion. stars are big exploding balls of 2. Composition: _____________________ _________________________________________ gas, mostly hydrogen and helium. of lines ...
Unit 3: Atoms and Light – Exploring Atomic and Electronic Structure
... tell what elements are actually present in the objects I study. This is relating to the wavelength of the light. Wavelength is a measurement of distance; it’s the distance between the peak in oscillation of the light. And that measurement can range from things the size of a football field, to the X- ...
... tell what elements are actually present in the objects I study. This is relating to the wavelength of the light. Wavelength is a measurement of distance; it’s the distance between the peak in oscillation of the light. And that measurement can range from things the size of a football field, to the X- ...
29 August: Getting Oriented, Astronomical Coordinate Systems
... motions in the sky • The Sun rises in the east, reaches highest altitude angle due south, sets in the west • When the Sun sets, it gets dark and we see the stars and planets • The Moon “ “ “ “ “ • The Moon rises at a different time each night and is seen against a different constellation • The const ...
... motions in the sky • The Sun rises in the east, reaches highest altitude angle due south, sets in the west • When the Sun sets, it gets dark and we see the stars and planets • The Moon “ “ “ “ “ • The Moon rises at a different time each night and is seen against a different constellation • The const ...
Astronomy - Dalriada at dalriada.org.uk
... (1473-1543) who developed a comprehensive heliocentric model, and all without the use of a telescope – which was not invented until the 17th century. 3.2 Constellations Only about 6000 stars are visible by eye unaided, and half of them are below the horizon at any one time. The ancient astronomers o ...
... (1473-1543) who developed a comprehensive heliocentric model, and all without the use of a telescope – which was not invented until the 17th century. 3.2 Constellations Only about 6000 stars are visible by eye unaided, and half of them are below the horizon at any one time. The ancient astronomers o ...
Going to the End of the Earth to Learn About the Beginning of the
... The Hubble (Space Telescope) Deep Field ...
... The Hubble (Space Telescope) Deep Field ...
Pulsars
... – Pulse stability shows radiation comes from a region where emission position does not vary – High directionality suggests that emission is from a region where field lines are not dispersed in direction i.e. last closed field lines near light cylinder – Regions near cylinder have low particle densit ...
... – Pulse stability shows radiation comes from a region where emission position does not vary – High directionality suggests that emission is from a region where field lines are not dispersed in direction i.e. last closed field lines near light cylinder – Regions near cylinder have low particle densit ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.