How does the Hubble telescope take pictures of the Milky Way?
Hubble flies around, or orbits, high above Earth and its atmosphere. Hubble uses a digital camera. It takes pictures like a cell phone. Then Hubble uses radio waves to send the pictures through the air back to Earth.
How did Hubble measure the distance to the Andromeda Galaxy?
Hubble obtained enough observations of V1 to plot its light curve, determining a period of 31.4 days, indicating the object was a Cepheid variable. Using all the Cepheids, he obtained a distance of 900,000 light-years. Improved measurements now place Andromeda at 2 million light-years away.
How does the Hubble telescope move?
The Magnetic Sensing System acts as Hubble’s compass, measuring the telescope’s orientation in relation to Earth’s magnetic field. When Hubble rotates, its gyroscopes measure the direction the telescope is turning and the rate of that rotation. Hubble has some of the most accurate and stable gyroscopes ever built.
How did Edwin Hubble’s discovery that the Andromeda nebula was at least 1 million light years away change scientists view of the universe?
After years of observation, Hubble made an extraordinary discovery. In 1923 he spotted a Cepheid variable star in what was known as the Andromeda Nebula. Using Leavitt’s techniques, he was able to show that Andromeda was nearly 1 million light years away and clearly a galaxy in its own right, not a gas cloud.
How old is our universe?
14 billion years old
The universe is (nearly) 14 billion years old, astronomers confirm. With looming discrepancies about the true age of the universe, scientists have taken a fresh look at the observable (expanding) universe and have estimated that it is 13.77 billion years old (plus or minus 40 million years).
How was Hubble able to determine the distances of nearby galaxies?
By taking the spectrum of a distant object, such as a galaxy, astronomers can see a shift in the lines of its spectrum and from this shift determine its velocity. Putting this velocity into the Hubble equation, they determine the distance.
Who found the first galaxy?
The first galaxies were identified in the 17th Century by the French astronomer Charles Messier, although at the time he did not know what they were. Messier, who was a keen observer of comets, spotted a number of other fuzzy objects in the sky which he knew were not comets.
Can you see the Milky Way without a camera?
With our own eyes, the Milky Way looks nowhere near as detailed or colourful as some of the photos I share. The reason for this is our eyes are not as sensitive as a digital camera sensor and they collect less light, meaning we see less detail in the Milky Way.
Where is the darkest place on earth?
Located at an elevation of 7,860 feet above sea level, the Roque de los Muchachos Observatory on the island of La Palma in the Canary Islands is an important site for astronomy.
How can Hubble get detailed views of distant galaxies?
Looking at our galaxy on the sky, we’re talking about the galaxy’s width divided by its distance from the observer — the same ratio we calculated before. So the ratio of the galaxy’s width to its distance from us, 0.00069, tells us the angle that the galaxy subtends on the sky, in radians.
Can you take pictures of the Milky Way?
However, with a few simple rules in mind, you can create stunning images of our galaxy. To take a good photo, you’ll need an advanced camera, a fast-aperture lens, and a tripod. By using this equipment, choosing the right time and place, and using the right settings, you can capture beautiful images of the Milky Way.
Are there any galaxies outside of the Milky Way?
Answer Wiki. Darshan is correct, most of what Hubble studies is outside the Milky Way. Any amateur telescope will show many galaxies outside the Milky Way. In fact, there are a few objects outside the Milky Way visible to the naked eye: In the northern hemisphere the Andromeda Galaxy, also known as M-31, is naked eye visible under dark skies.
How big is the galaxy in the Hubble telescope?
According to the ” Fast Facts ” published with that Hubble image of galaxy NGC 5584, it is about 72 million light-years away, and the photo spans 50,000 light-years. On the date of the Pluto-and-moons image (July 7, 2012), the Solar System Simulator tells us that Pluto was 4.675 billion kilometers from Earth. Pluto is about 2400 kilometers across.