UPSC Current Affairs
Why will Saturn’s rings briefly ‘disappear’ from view in 2025?
Why will Saturn’s rings be invisible from Earth? Like Earth’s axis of rotation, which is tilted by 23.5 degrees, Saturn’s axis of rotation has a 26.7 degree tilt — its enormous ring system is also tilted to the plane of Saturn’s orbit. As a result, when Saturn revolves around the Sun, it seems to nod up and down when viewed from Earth and the view of its rings also keeps changing.
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Why will Saturn’s rings be invisible from Earth? Like Earth’s axis of rotation, which is tilted by 23.5 degrees, Saturn’s axis of rotation has a 26.7 degree tilt — its enormous ring system is also tilted to the plane of Saturn’s orbit. As a result, when Saturn revolves around the Sun, it seems to nod up and down when viewed from Earth and the view of its rings also keeps changing.
Why will Saturn’s rings be invisible from Earth?
- Like Earth’s axis of rotation, which is tilted by 23.5 degrees, Saturn’s axis of rotation has a 26.7 degree tilt — its enormous ring system is also tilted to the plane of Saturn’s orbit. As a result, when Saturn revolves around the Sun, it seems to nod up and down when viewed from Earth and the view of its rings also keeps changing.
- Saturn takes 29.5 years to complete an orbit around the Sun and every 13 to 15 years, the edge of its rings aligns directly with Earth.
- As the rings are very thin — in most places, just tens of metres thick — at this position, “they reflect very little light, and are very difficult to see, making them essentially invisible,”.
- In March 2025 — Saturn’s rings will not be visible from Earth because they will be perfectly aligned with our line of sight. The rings will gradually return to view as the planet will continue to revolve around the Sun.
Will Saturn’s rings actually disappear in the future?
- Yes, they might. According to a 2018 report by the National Aeronautics and Space Administration (NASA), Saturn would probably lose its rings completely in the next 300 million years, or even sooner than that.
- It will probably happen because the rings are being pulled into the planet by its gravity as a dusty rain of ice particles under the influence of Saturn’s magnetic field, said the report.
- “We estimate that this ‘ring rain’ drains an amount of water products that could fill an Olympic-sized swimming pool from Saturn’s rings in half an hour,” according to James O’Donoghue of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
- The report also added that Saturn, which is four billion years old, got the rings much later in its life since the rings aren’t older than 100 million years.
- “We are lucky to be around to see Saturn’s ring system, which appears to be in the middle of its lifetime. However, if rings are temporary, perhaps we just missed out on seeing giant ring systems of Jupiter, Uranus and Neptune, which have only thin ringlets today!” O’Donoghue added.
Syllabus- Prelims; Current Affairs
Source- Indian Express
- Prelims: Key facts, institutions, locations and terminology in the article.
- Mains: Connect the topic with Economy, Polity & Governance.
- Revision: Use the article headings to prepare concise notes and answer-writing points.
Test your understanding
Questions from this article
Prelims practiceWith reference to Why will Saturn’s rings briefly ‘disappear’ from view in 2025?, consider the following statements:
- Like Earth’s axis of rotation, which is tilted by 23.5 degrees, Saturn’s axis of rotation has a 26.7 degree tilt — its enormous ring system is also tilted to the plane of Saturn’s orbit. As a result, when Saturn revolves…
- Saturn takes 29.5 years to complete an orbit around the Sun and every 13 to 15 years, the edge of its rings aligns directly with Earth.
- As the rings are very thin — in most places, just tens of metres thick — at this position, “they reflect very little light, and are very difficult to see, making them essentially invisible,”.
Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
View answer
Answer: (d) 1, 2 and 3. All three statements are drawn from the article.
Mains practiceDiscuss the background, key issues and significance of Why will Saturn’s rings briefly ‘disappear’ from view in 2025? for India.
Answer in 250 words.
View answer approach
- Why will Saturn’s rings be invisible from Earth?
- Will Saturn’s rings actually disappear in the future?
- Background and context
- Key facts and institutional framework
- Significance and way forward
Frequently asked questionsFrequently asked questions
Why is Why Will Saturn’S Rings Briefly ‘Disappear’ From View In 2025 in the news?
Why will Saturn’s rings be invisible from Earth? Like Earth’s axis of rotation, which is tilted by 23.5 degrees, Saturn’s axis of rotation has a 26.7 degree tilt — its enormous ring system is also tilted to the plane of Saturn’s orbit.
What are the key facts about Why Will Saturn’S Rings Briefly ‘Disappear’ From View In 2025?
As a result, when Saturn revolves around the Sun, it seems to nod up and down when viewed from Earth and the view of its rings also keeps changing. Saturn takes 29.5 years to complete an orbit around the Sun and every 13 to 15 years, the edge of its rings aligns directly with Earth. As the rings are very thin — in most places, just tens of metres thick — at this position, “they reflect very little light, and are very difficult to see, making them essentially invisible,”.
Why is Why Will Saturn’S Rings Briefly ‘Disappear’ From View In 2025 important for UPSC preparation?
The topic connects current developments with Economy, Polity & Governance and is relevant for both objective revision and analytical answer writing.