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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallFor a reliable account of the Solar System’s distant future, start with NASA’s explanations of stellar evolution, then read its discussion of planetary uncertainty and its report on planets around white dwarfs. The broad outline is well established: the Sun is expected to expand into a red giant, shed its outer layers, and become a white dwarf. The exact fate of Earth and the outer planets is less certain, and observations of another star system cannot settle what will happen here.
Start with the basic stellar-evolution timeline
NASA’s Types of Stars is a useful first stop for understanding the main sequence, red giants, and white dwarfs. NASA describes the Sun as about 4.6 billion years old and expects it to remain a main-sequence star for about five billion more years. These are rounded educational estimates, not a precise countdown.
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As the Sun runs low on hydrogen in its core, it is expected to expand into a red giant. NASA’s public explainer estimates that the red-giant phase will last about a billion years. The Sun is then expected to lose its outer layers and leave behind a white dwarf: its exposed stellar core, which will cool over billions of years. NASA’s overview places the white-dwarf stage about ten billion years from now. See NASA’s explanation of why the Sun will not become a black hole and its In Depth: Sun page for complementary summaries.
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Use NASA’s planetary-fate chapter for the uncertainties
After learning the broad stellar sequence, read NASA’s “Aging Into Gianthood”. It explains why the planets’ outcomes depend on more than whether the Sun expands: solar mass loss weakens its gravitational hold, while the expanding star and tidal effects also influence planetary orbits.
What NASA says about the inner planets
Mercury and Venus are expected to be engulfed as the Sun expands. Earth’s fate is not settled in NASA’s summaries. The chapter says recent modeling suggests Earth probably will not make it out intact, while NASA’s later Webb report describes the possibility of Mercury, Venus, and “possibly the Earth” being engulfed. These are qualified predictions, not a basis for saying Earth’s outcome is certain. NASA’s chapter quotes University of Warwick astronomer Dimitri Veras: “But the fate of the Earth — which resides in between — is less clear,”
What may happen to the outer planets
As the Sun loses mass, surviving planets’ orbits are expected to expand. NASA’s educational chapter gives a rough estimate that the outer planets could settle at about twice their current distances from the Sun. Treat that as an approximate model summary, not an exact final orbit for each planet: NASA’s July 2026 Webb report says the fate of more distant planets, especially gas giants, remains unclear.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Read the Webb result as an analogy, not a forecast for our planets
NASA’s Webb report, published July 1, 2026, describes WD 1856 b, a Jupiter-sized object orbiting a white dwarf. It provides an observational example of a planet in a system whose star has reached a late evolutionary stage, and it can inform models of planetary survival. But WD 1856 b belongs to another system; its survival does not prove that Jupiter or any other planet in our Solar System will survive the Sun’s evolution.
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The report gives details specific to WD 1856 b: it orbits its white dwarf every 34 hours, at a reported separation of less than two million miles (three million kilometers); its mass is estimated between four and eleven Jupiter masses, and its measured temperature is about 260°F (126°C). These observations describe that exoplanet, not predicted properties or orbits of our future outer planets. The report quotes lead author Ryan MacDonald of the University of St. Andrews: “We’re used to looking back in time when we use telescopes, but this is the first time we have been able to look forward to what might happen to the outer planets around the remnant of a Sun-like star,”
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Judge each source by what kind of evidence it provides
- For the general sequence: NASA’s stellar-evolution pages explain the expected stages of a Sun-like star. Their rounded timelines are useful for orientation, not exact dates.
- For a particular planet’s fate: NASA’s “Aging Into Gianthood” chapter discusses interactions between stellar expansion, mass loss, tides, and planetary orbits. A specific model may make a more detailed prediction, but its assumptions matter.
- For observed examples: The Webb report concerns direct observations of WD 1856 b and WD 1856+534. It is evidence about that system, not direct observation of the Sun’s future.
- For claims about certainty: Preserve the source’s wording—such as “possibly,” “probably,” or “unclear.” The reviewed NASA summaries give no probability or confidence interval for Earth’s survival that can responsibly be quoted.
Check claims that go beyond the evidence
- The Sun is not expected to explode as a supernova or become a neutron star or black hole; NASA says it lacks the mass required for those endpoints. Its expected remnant is a white dwarf.
- Earth’s fate should not be stated as certain: NASA’s summaries describe uncertainty rather than a settled outcome.
- The “twice today’s distance” estimate should not be presented as a precise orbit prediction for every outer planet.
- A planet around a white dwarf in another system does not demonstrate that Jupiter will survive.
- Do not turn rounded timescales into an exact date or attach an unsupported probability to a planetary outcome.
A practical reading order
- Read NASA’s Types of Stars for the main-sequence, red-giant, and white-dwarf stages.
- Use NASA’s In Depth: Sun page for a concise Solar System overview.
- Read “Aging Into Gianthood” to understand why the fate of individual planets is more uncertain than the broad stellar sequence.
- Read the July 1, 2026 Webb report on WD 1856 b as an observed example, keeping its findings separate from predictions about our own planets.
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