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Time for the Stars

Time for the Stars is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Time for the Stars rather than just read about it. In short: Time for the Stars is a juvenile science fiction novel by American writer Robert A. Heinlein, published by Scribner's in 1956 as one of the Heinlein juveniles.

Time for the Stars — main illustration
Time for the Stars — illustration

Key takeaways

  • Time for the Stars belongs to astronomy; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Time for the Stars to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Time for the Stars from memory before moving on to harder problems.

Reference excerpt

Time for the Stars is a juvenile science fiction novel by American writer Robert A. Heinlein, published by Scribner's in 1956 as one of the Heinlein juveniles. The basic plot line is derived from a 1911 thought experiment in special relativity, commonly called the twin paradox, proposed by French physicist Paul Langevin.

Plot summary The Long Range Foundation (LRF), a non-profit organization that funds expensive, long-term projects for the benefit of mankind that nobody else will even consider, has built a dozen exploratory torchships to search for habitable planets to colonize. The vessels can continually accelerate, but cannot exceed the speed of light, so the voyages will last many years. Each starship has a much larger crew than necessary to maintain a more stable, long-term shipboard society, as well as to provide replacements for the inevitable deaths. The LRF has found that some twins and triplets can communicate with each other telepathically. The process seems instantaneous and unaffected by distance, making it the only practical means of communication for ships traveling many light-years away from Earth. Before announcing the discovery, the Foundation first recruits as many of these people as it can. Testing shows that teenagers Tom and Pat Bartlett have this talent, and both sign up. Pat, the dominant twin, manipulates things so that he gets selected as the crew member, much to Tom's annoyance. However, Pat does not really want to leave, and his subconscious engineers a convenient accident so that Tom has to take his place at the last minute. On board, Tom is pleased to find that his uncle Steve, a soldier, has arranged to get assigned to the same ship. The trip is fraught with problems – as trivial as an annoying roommate and as serious as mutiny. The ship visits several star systems, including Beta Hydri. Due to the nature of relativistic travel (see twin paradox), the twin who remained behind ages faster and eventually the affinity between them weakens to the point where they can no longer communicate easily. Some of the spacefaring twins, including the protagonist, are able to connect with descendants of the Earth-based twins. Tom works first with his niece, then his grandniece, and finally his great-grandniece. The last planet scouted proves particularly deadly. Unexpectedly intelligent and hostile natives capture and kill a large portion of the remaining crew, including the captain and Tom's uncle. The reserve captain takes charge, but is unable to restore the morale of the devastated survivors. When he insists on continuing the mission rather than returning to Earth, members of the crew begin to consider mutiny. Shortly after the new captain notifies Earth of the dire situation, the crew learn to their surprise that a spaceship will rendezvous with them in less than a month; they surmise it must be a much more advanced spaceship. Scientists on Earth have discovered faster-than-light travel, in part due to research into the nature of telepathy, and are collecting the surviving crews of the torchships. They are returned to an Earth they no longer recognize, and in most cases, no longer fit into. Tom, however, returns to marry his latest telepathic partner, his own great-grandniece, who states she has been reading his mind since childhood.

Reception Galaxy reviewer Floyd C. Gale praised the novel as "an engrossing yarn", saying "The plot twists will take you by surprise and the characterizations delight you."

See also Children and Young Adult Literature portal

References

External links Time for the Stars title listing at the Internet Speculative Fiction Database Time for the Stars at Open Library

Worked examples

Example 1 — a first encounter with Time for the Stars

Start with the simplest possible case. Write down what Time for the Stars claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Time for the Stars before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Time for the Stars ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Time for the Stars

In research
Time for the Stars appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Time for the Stars in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Time for the Stars is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1956 American novels, 1956 English-language novels, 1956 science fiction novels, so understanding it makes those chapters shorter.
In everyday life
Look for Time for the Stars outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Time for the Stars in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Time for the Stars means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Time for the Stars out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Time for the Stars in simple terms?

Time for the Stars is a juvenile science fiction novel by American writer Robert A. Heinlein, published by Scribner's in 1956 as one of the Heinlein juveniles.

Why does Time for the Stars matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Time for the Stars?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Time for the Stars.

Tags

  • 1956 American novels
  • 1956 English-language novels
  • 1956 science fiction novels
  • American young adult novels
  • Children's science fiction novels
  • Fiction about time dilation
  • Fiction set around Beta Hydri
  • Novels about telepathy
  • Novels by Robert A. Heinlein
  • Space exploration novels

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