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Chapter 21: Problem 60

Go to the HST website and watch the videos about the possible collision of the Milky Way and Andromeda (http:// hubblesite.org/newscenter/archive/releases/galaxy/2012/20/ video). Read the report under "The Full Story." Now do a Web search on this story, which received a lot of press in \(2012 .\) Did other astronomers dispute this study later? Is it still receiving a lot of press attention?

Short Answer

Expert verified
Most astronomers agreed with the 2012 study, and the topic still receives occasional attention in astronomical news.

Step by step solution

01

- Watch the Video

Go to the Hubble Space Telescope (HST) website. Find and watch the video about the possible collision between the Milky Way and Andromeda galaxies found at http://hubblesite.org/newscenter/archive/releases/galaxy/2012/20/video.
02

- Read 'The Full Story'

After watching the video, read the report titled 'The Full Story' on the same webpage. This report will give you a detailed explanation of the study regarding the potential collision.
03

- Conduct a Web Search

Perform a web search on the story of the possible collision between the Milky Way and Andromeda, which was highlighted in the media in 2012. Use keywords like 'Milky Way Andromeda collision 2012' to find relevant articles and information.
04

- Investigate Disputes by Other Astronomers

Check if any other astronomers disputed the study after 2012. Look for scientific papers, articles, or interviews where astronomers discuss the validity and implications of the study.
05

- Examine Current Press Attention

Examine if the topic of the collision between the Milky Way and Andromeda still receives a lot of attention in the press. Look for recent articles, blogs, or news reports discussing the topic. Note whether there have been any new discoveries or updates.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

galactic collision
A galactic collision is a phenomenon where two galaxies pass through each other and interact gravitationally. One of the most discussed impending collisions is that of the Milky Way and Andromeda galaxies. By observing the movement of each galaxy, astronomers predict that they will collide in about 4 billion years. This collision is expected to profoundly transform both galaxies. Although such a collision might sound catastrophic, the vast spaces between stars mean that actual stellar collisions are rare during such events. Instead, gravitational forces significantly disrupt the structure and distribution of stars and gas in the involved galaxies.
Hubble Space Telescope
The Hubble Space Telescope (HST) has been pivotal in advancing our understanding of the universe. Launched in 1990, it orbits Earth and allows astronomers to observe celestial objects with unprecedented clarity. One of Hubble's key contributions is the detailed observation of the Milky Way and Andromeda galaxies, providing crucial data for studying their collision. By capturing high-resolution images and collecting data on galactic movements, Hubble has enabled scientists to make predictions about the future behavior of these galaxies, including the anticipated collision.
astronomy research
Astronomy research involves studying celestial objects and phenomena to unravel the mysteries of the universe. The potential collision between the Milky Way and Andromeda is a significant topic of interest in this field. Researchers use various methods, including telescope observations and simulations, to understand the dynamics of such collisions. Findings from this research help in understanding the life cycles of galaxies, including their formation, interaction, and eventual merging. The information gathered can also shed light on the overall structure and evolution of the universe.
scientific dispute
Scientific discoveries often spark debates and disputes within the scientific community. The study predicting the Milky Way and Andromeda collision is no exception. Following its publication, some astronomers have analyzed the data and methods used, resulting in discussions regarding the accuracy and implications of the findings. Disputes can arise over the interpretation of data, the models used in simulations, or the conclusions drawn from observations. Such debates are essential for scientific progress, as they drive further investigations and refinements in understanding complex phenomena.
press coverage
The potential collision between the Milky Way and Andromeda galaxies has attracted substantial media attention since its major press coverage in 2012. The topic interests both scientists and the general public, leading to numerous articles, blogs, and news reports. While initial coverage focused on the dramatic implications of the collision, subsequent reports have delved into ongoing research and updated findings. Press coverage plays a crucial role in disseminating scientific knowledge and engaging the public in astronomical discoveries. It also helps highlight the importance of continuous research and observation in the field of astronomy.

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Most popular questions from this chapter

Globular clusters are important because a. they provide information about how the Milky Way formed and evolved. b. they provide information about how stars evolve. c. they reveal the size of the Milky Way, and Earth's location in it. d. all of the above

T/F: A globular cluster spends most of its time in the galaxy's halo.

Compare and contrast globular and open clusters. a. What are the main differences in the gas out of which globular and open clusters formed? b. Why do globular clusters have such high masses while open clusters have low masses? c. Are the characteristics of interest in parts (a) and (b) related? Explain.

Detailed observations of the structure of the Milky Way are difficult because a. the Solar System is embedded in the dust and gas of the disk. b. the Milky Way is mostly dark matter. c. there are too many stars in the way. d. the galaxy is rotating too fast (about \(200 \mathrm{km} / \mathrm{s}\) ).

Parallax measurements of the variable star RR Lyrae indicate that it is located 230 pc from the Sun. A similar star observed in a globular cluster located far above the galactic plane appears 160,000 times fainter than RR Lyrae. a. How far from the Sun is this globular cluster? b. What does your answer to part (a) tell you about the size of the galaxy's halo compared to the size of its disk?
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