Table of Contents
- 1 How far is a star on far side of Milky Way galaxy from Earth?
- 2 How does the travel time of light from the far side of the galaxy to Earth compared to the travel time of light from the near side?
- 3 Could we see a galaxy that is 20 billion light-years away?
- 4 How many light years away is the Andromeda Galaxy?
- 5 Is the Great Andromeda Nebula an external galaxy?
How far is a star on far side of Milky Way galaxy from Earth?
99,000 light-years
The researchers, in South Africa and Japan, discovered five stars known as Cepheids shining on the opposite side of the Milky Way’s disk, 72,000 to 99,000 light-years from Earth. All five stars lie behind the galactic center, which is in the constellation Sagittarius about 27,000 light-years from us.
How far is the galaxy Andromeda from Earth?
2.537 million light years
Andromeda Galaxy/Distance to Earth
How does the travel time of light from the far side of the galaxy to Earth compared to the travel time of light from the near side?
As you found in Part B, light from more distant objects takes a longer time to travel to Earth. This means that we see more distant objects as they were longer ago. In other words, more distant objects have aged more since their light left on its way to Earth.
Is Pluto closer to Earth than the sun?
This is when Pluto is closer to the Sun than even Neptune….Is Pluto or the Sun Closer to Earth?
| Object | Pluto |
|---|---|
| Distance From the Sun | 39.5 AU or 5.9 billion km / 3.7 billion mi |
| Farthest Distance – Aphelion | 49.30 AU or 7.3 billion km / 4.5 billion mi |
| Closest Distance – Perihelion | 29.65 AU or 4.4 billion km / 2.7 billion mi |
Could we see a galaxy that is 20 billion light-years away?
Average distances between galaxies are increasing with time. Could we see a galaxy that is 20 billion light-years away? (Assume that we mean a “lookback time” of 20 billion years.) No, because it would be beyond the bounds of our observable universe.
Are there planets in the Andromeda Galaxy?
Astronomers announced a possible planet in the nearby Andromeda galaxy in 2009, but its presence has not yet been confirmed. So this makes the newly found planet, called HIP 13044 b, the first to be discovered around a star apparently from another galaxy.
How many light years away is the Andromeda Galaxy?
Q:The Andromeda Galaxy is moving toward the Milky Way from 2.5 million light-years away. Today, we see it as it was 2.5 million years ago.
Which is the brightest star in the Andromeda Galaxy?
Here’s the technique most people use to find the Andromeda galaxy. Just be sure you’re looking in a dark sky. Look northward for the M- or W-shaped constellation Cassiopeia the Queen. Now locate the star Schedar in Cassiopeia. It’s the constellation’s brightest star, and it points to the Andromeda galaxy.
Is the Great Andromeda Nebula an external galaxy?
To support his claim of the Great Andromeda Nebula being, in fact, an external galaxy, Curtis also noted the appearance of dark lanes within Andromeda which resembled the dust clouds in our own galaxy, as well as historical observations of Andromeda Galaxy’s significant Doppler shift.
How is the Milky Way different from the Andromeda Galaxy?
The rate of star formation in the Milky Way is much higher, with the Andromeda Galaxy producing only about one solar mass per year compared to 3–5 solar masses for the Milky Way. The rate of novae in the Milky Way is also double that of the Andromeda Galaxy.