CONSTELLATION CANES VENATICI the two hunting dogs Canes
... Supervoid and 1,200 times the volume of expected typical voids. It was discovered in 1988 in a deep-sky survey. • Canes Venatici contains five Messier objects, including four galaxies. The more significant are • the Whirlpool Galaxy (M51, NGC 5194) and NGC 5195, a small barred spiral galaxy that is ...
... Supervoid and 1,200 times the volume of expected typical voids. It was discovered in 1988 in a deep-sky survey. • Canes Venatici contains five Messier objects, including four galaxies. The more significant are • the Whirlpool Galaxy (M51, NGC 5194) and NGC 5195, a small barred spiral galaxy that is ...
Deep Space (PDF: 224k)
... hotter photosphere. Hotter objects glow bluer like the metal under an arcwelder’s spark. The most massive stars are so hot that most of their energy is emitted beyond blue in the ultraviolet. You’ll need SPF 10,000 if you ever visit Sirius, the bright blue star in the summer sky! Less-massive stars ...
... hotter photosphere. Hotter objects glow bluer like the metal under an arcwelder’s spark. The most massive stars are so hot that most of their energy is emitted beyond blue in the ultraviolet. You’ll need SPF 10,000 if you ever visit Sirius, the bright blue star in the summer sky! Less-massive stars ...
VOYAGER® 8 INCH DOBSONIAN TELESCOPE MODEL 78-8000
... you might like to know about astronomy. The first thing you need to do is get a very simple star chart and a flashlight with a red bulb or red cellophane over the end. For objects other than stars and constellations, a basic guide to astronomy is a must. Some recommended sources appear on our websit ...
... you might like to know about astronomy. The first thing you need to do is get a very simple star chart and a flashlight with a red bulb or red cellophane over the end. For objects other than stars and constellations, a basic guide to astronomy is a must. Some recommended sources appear on our websit ...
Assignment 10
... b. variations in luminosity with a period of seconds c. redshifts that indicate they are far away d. tremendous proper motion (apparent motion across the sky) e. gravitational lenses clearly visible around them ____ 19. What method would astronomers use to find the distance to a remote quasar? a. pa ...
... b. variations in luminosity with a period of seconds c. redshifts that indicate they are far away d. tremendous proper motion (apparent motion across the sky) e. gravitational lenses clearly visible around them ____ 19. What method would astronomers use to find the distance to a remote quasar? a. pa ...
Final Exam - Practice questions for Unit V
... the smaller its radius when on the main sequence. ...
... the smaller its radius when on the main sequence. ...
Last Year`s Exam, Section B
... Suppose that a solar system exactly like our own were located about 20 light years away. Using direct observation (i.e. not by applying theories of stellar structure), what could astronomers on Earth learn about this system? In your answer you should consider properties of the star, e.g. mass, tempe ...
... Suppose that a solar system exactly like our own were located about 20 light years away. Using direct observation (i.e. not by applying theories of stellar structure), what could astronomers on Earth learn about this system? In your answer you should consider properties of the star, e.g. mass, tempe ...
c. Section 2.3 Human Vision
... tiny camera at one end of the cable and a monitor at the other end. • in telecommunications, optical fibres are used with laser light to transmit telephone, video, and ...
... tiny camera at one end of the cable and a monitor at the other end. • in telecommunications, optical fibres are used with laser light to transmit telephone, video, and ...
Antares - Emmi
... used to measure incredibly hot objects or stars Kelvin is 272 degrees Celsius) Even though Antares is much colder it is brighter because it is much larger ...
... used to measure incredibly hot objects or stars Kelvin is 272 degrees Celsius) Even though Antares is much colder it is brighter because it is much larger ...
The Stars
... • Stellar properties are determined solely by their mass, composition, age, and rotation rate. • The properties of main sequence stars are largely determined by their masses. • Single stars are spherical, unless distorted by rotation ...
... • Stellar properties are determined solely by their mass, composition, age, and rotation rate. • The properties of main sequence stars are largely determined by their masses. • Single stars are spherical, unless distorted by rotation ...
Stellar temperatures and spectral types
... Hydrogen lines in the visible part of the spectrum (known as the Balmer Series) are created when a photon is absorbed by bouncing an electron from the 1st excited level to a higher excited level. • Photons with just the right energy to move an electron from the 1st excited state to the 2nd excited s ...
... Hydrogen lines in the visible part of the spectrum (known as the Balmer Series) are created when a photon is absorbed by bouncing an electron from the 1st excited level to a higher excited level. • Photons with just the right energy to move an electron from the 1st excited state to the 2nd excited s ...
Star- large ball of gas held together by large ball of gas held
... molecules that clump up due to gravity. When the clump reaches the size of Jupiter, it creates enough energy by nuclear fusion to shine – becoming a star. For stars that are about the size of our sun, after main sequence they become giants, white dwarfs, and then black dwarfs. For stars larger than ...
... molecules that clump up due to gravity. When the clump reaches the size of Jupiter, it creates enough energy by nuclear fusion to shine – becoming a star. For stars that are about the size of our sun, after main sequence they become giants, white dwarfs, and then black dwarfs. For stars larger than ...
Outline2a
... Eventually, the proto-star will fuse hydrogen in its core. This energy will greatly increase the radiation pressure that the photons create on their surroundings. A stellar wind will begin to blow material away. ...
... Eventually, the proto-star will fuse hydrogen in its core. This energy will greatly increase the radiation pressure that the photons create on their surroundings. A stellar wind will begin to blow material away. ...
Today`s Powerpoint
... Mass of end products is less than mass of 4 protons by 0.7%. Mass converted to energy. 600 millions of tons per second fused. Takes billions of years to convert p's to 4He in Sun's core. Process sets lifetime of stars. Hydrostatic Equilibrium: pressure from fusion reactions balances gravity. Sun is ...
... Mass of end products is less than mass of 4 protons by 0.7%. Mass converted to energy. 600 millions of tons per second fused. Takes billions of years to convert p's to 4He in Sun's core. Process sets lifetime of stars. Hydrostatic Equilibrium: pressure from fusion reactions balances gravity. Sun is ...
Unit 5 – Space Exploration - Buck Mountain Central School
... A frame of reference is a set of axes of any kind that is used to describe positions or motions of things. The stars, the Sun and the planets do not rotate around the Earth, but seem to because the Earth is rotating on its axis. The Earth is our fixed frame of reference. To locate positions on Earth ...
... A frame of reference is a set of axes of any kind that is used to describe positions or motions of things. The stars, the Sun and the planets do not rotate around the Earth, but seem to because the Earth is rotating on its axis. The Earth is our fixed frame of reference. To locate positions on Earth ...
Aryabhatta Research Institute of Observational Sciences
... km) are very important for understanding global change, assessing the impact of human activities on free tropospheric aerosols and also for modelling boundary layer and free-troposphere mass exchanges. Such measurements are lacking, particularly in India. Taking the advantage of its geographical loc ...
... km) are very important for understanding global change, assessing the impact of human activities on free tropospheric aerosols and also for modelling boundary layer and free-troposphere mass exchanges. Such measurements are lacking, particularly in India. Taking the advantage of its geographical loc ...
Slide 1
... surrounded by an accretion disk. The central black hole may be billions of solar masses. Often strong ...
... surrounded by an accretion disk. The central black hole may be billions of solar masses. Often strong ...
Stars: Their Life and Afterlife
... galaxy are discovered in radio, while in their Sedov or radiative phases – after they have swept up a large amount of interstellar matter. Inside a superbubble, the density is so low that SNRs must expand to much larger sizes before sweeping up enough mass to radiate appreciably in the radio – and b ...
... galaxy are discovered in radio, while in their Sedov or radiative phases – after they have swept up a large amount of interstellar matter. Inside a superbubble, the density is so low that SNRs must expand to much larger sizes before sweeping up enough mass to radiate appreciably in the radio – and b ...
A-36_SF
... Space between stars is filled with warm gas, mostly atomic H. The densest and coldest regions (where stars will form) have most of their mass in molecular ...
... Space between stars is filled with warm gas, mostly atomic H. The densest and coldest regions (where stars will form) have most of their mass in molecular ...
Exploring our Solar System
... Real rockets don’t travel at the speed of light, they travel MUCH slower. The Apollo missions took 4 days to reach the moon - at the speed of light it would have taken 2 seconds!! These rockets were travelling roughly 200 000 times slower than light. At this speed it would take 125 YEARS to get to ...
... Real rockets don’t travel at the speed of light, they travel MUCH slower. The Apollo missions took 4 days to reach the moon - at the speed of light it would have taken 2 seconds!! These rockets were travelling roughly 200 000 times slower than light. At this speed it would take 125 YEARS to get to ...
THE METER STICK MODEL OF THE SOLAR SYSTEM
... 5. Ask the students to predict how long it would take to run or walk 63,360 inches. 6. Explain that since an inch is so small compared to the total distance being measured, it is hard to imagine how far 63,360 inches is. For this reason, it is difficult to predict how long it would take to run that ...
... 5. Ask the students to predict how long it would take to run or walk 63,360 inches. 6. Explain that since an inch is so small compared to the total distance being measured, it is hard to imagine how far 63,360 inches is. For this reason, it is difficult to predict how long it would take to run that ...
Astronomy 12 - hrsbstaff.ednet.ns.ca
... hydrogen, and that the Sun's current mass was its mass before main-sequence burning. You will use some known properties of the Sun, and the knowledge that the Sun fuses hydrogen into helium. (i) From the internet, find the mass (in kg) and luminosity (in Watts) of the Sun. (ii) The Sun's principal r ...
... hydrogen, and that the Sun's current mass was its mass before main-sequence burning. You will use some known properties of the Sun, and the knowledge that the Sun fuses hydrogen into helium. (i) From the internet, find the mass (in kg) and luminosity (in Watts) of the Sun. (ii) The Sun's principal r ...
Binary Stars
... mass. Each one has a strong influence on the other, and they both move perceptibly. (It’s not like a tiny satellite going around the huge Earth.) ...
... mass. Each one has a strong influence on the other, and they both move perceptibly. (It’s not like a tiny satellite going around the huge Earth.) ...
Structure of the Universe
... massive stars, but rather a white dwarf that accretes mass from a companion until it exceeds the Chandrasekhar limit (1.4 Msun) ...
... massive stars, but rather a white dwarf that accretes mass from a companion until it exceeds the Chandrasekhar limit (1.4 Msun) ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.