Does outer space end – or go on forever?

Yahoo! News - Apr 27th, 2025
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The article in the Curious Kids series, authored by Jack Singal, explores the mysteries of space and the universe. It discusses how the Earth's atmosphere transitions into space, which is filled with vast emptiness and billions of stars and galaxies. The piece highlights the immense distances involved in space travel, explaining that even the fastest NASA probe would take thousands of years to reach the nearest star. The article also mentions that many stars have their own planets, some potentially similar to Earth, which raises the possibility of extraterrestrial life.

The article delves into the intriguing question of whether space is infinite or if it has an end. Some scientists believe the universe might be infinite, continuously filled with galaxies with no boundaries. Others speculate that the universe might curve back on itself, similar to walking around a globe, suggesting a finite yet unimaginably large cosmos. However, the definitive answers to these cosmic questions remain unknown, leaving room for future discoveries and exploration, sparking curiosity in readers of all ages.

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RATING

8.6
Fair Story
Consider it well-founded

The article provides a clear, accurate, and engaging exploration of fundamental questions about the universe, making it suitable for a broad audience, including children. Its strengths lie in its clarity, transparency, and factual accuracy, supported by the author's expertise and the reputable publishing platform. While not directly tied to current events, the topic remains of enduring interest to the public, fostering curiosity about space and science. The article's educational focus and invitation for reader engagement further enhance its appeal, although its impact on public opinion or policy is limited. Overall, the article effectively balances informative content with accessibility, making it a valuable resource for those interested in the mysteries of the universe.

RATING DETAILS

9
Accuracy

The article provides a largely accurate representation of current scientific understanding about outer space and the universe. It correctly describes the atmosphere as extending about 20 miles above Earth, although this is a simplification since the boundary of space is often considered to be the Kármán line at 100 km. The description of space as a near-vacuum with low particle density aligns with scientific consensus. The article accurately states that the Sun is an average star, appearing larger due to its proximity. Distances to the nearest stars and galaxies are correctly characterized as enormous, requiring thousands to millions of years of travel at current spacecraft speeds. The claim that there are about 100 billion stars in the Milky Way is consistent with widely accepted estimates. The discussion of the universe's expansion and the possibility of it being infinite or finite but unbounded is well-supported by current cosmological theories. Overall, the article demonstrates a strong adherence to factual accuracy, with few areas needing further verification.

8
Balance

The article presents a balanced view of the scientific understanding of the universe, discussing both well-established facts and areas of ongoing research. It acknowledges the limits of current knowledge, particularly regarding whether the universe is infinite or finite but unbounded. This balanced approach provides readers with a comprehensive view of the topic, highlighting both what is known and what remains uncertain. The article does not exhibit favoritism towards any particular scientific theory and fairly represents the range of scientific perspectives on the nature of the universe.

9
Clarity

The article is written in clear and accessible language, making complex scientific concepts understandable for a broad audience, including children. The use of analogies, such as comparing stars to houses and galaxies to cities, helps convey the vastness of space in relatable terms. The logical flow of the article is smooth, guiding readers through the journey from the Earth's atmosphere to the far reaches of the universe. The tone is neutral and educational, avoiding technical jargon that could hinder comprehension. Overall, the article's clarity is a significant strength, making it engaging and informative for readers of all ages.

8
Source quality

The article is written by Jack Singal, a scientist from the University of Richmond, and is republished from The Conversation, a reputable nonprofit news organization. The article does not rely on a wide range of sources, but the author's academic background lends credibility to the information presented. The absence of any disclosed conflicts of interest or affiliations beyond the author's academic appointment further supports the reliability of the content. While the article could benefit from additional citations or references to specific studies, the author's expertise and the reputation of the publishing platform contribute to the overall quality of the sources.

9
Transparency

The article is transparent in its disclosure of the author's background and potential conflicts of interest, noting that Jack Singal does not have affiliations that would benefit from the article. The article also makes it clear that some of the content has been updated for accuracy, demonstrating a commitment to providing correct information. The methodology behind the claims is not explicitly detailed, but the article effectively communicates the basis of its claims through analogies and explanations suitable for a general audience. The transparency in acknowledging the limits of current scientific knowledge adds to the article's credibility.

Sources

  1. https://www.swinburne.edu.au/news/2021/08/Is-space-infinite-we-asked-5-experts/
  2. https://www.skyatnightmagazine.com/space-science/does-universe-have-edge
  3. https://en.wikipedia.org/wiki/Outer_space
  4. https://www.vedantu.com/blog/end-of-space
  5. https://www.space.com/whats-beyond-universe-edge