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For a reliable account of the Solar System’s far future, start with NASA’s explanations of stellar evolution, then use its planet-fate chapter and newer Webb reporting to understand what remains uncertain. 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, so treat rounded timelines and orbital estimates as explanations—not precise forecasts.
Start with the Sun’s life cycle
NASA’s Types of Stars page is a useful first stop for the basic sequence: the Sun is currently a main-sequence star, and a Sun-like star eventually becomes a red giant and then a white dwarf. NASA describes the Sun as about 4.6 billion years old, with about five billion years remaining in its main-sequence phase. These are rounded educational timescales, not dates precise enough to put on a calendar.
For a second accessible overview, NASA Solar System Exploration’s In Depth: Sun says the Sun has roughly five billion years before it becomes a white dwarf and notes that Earth may or may not be engulfed. NASA’s Why the Sun Won’t Become a Black Hole gives a simplified account in which the Sun begins running low on core hydrogen in about five billion years and spends about a billion years as a red giant. Taken together, these explain the broad progression; they do not fix the exact timing of every stage.
Use NASA’s planet-fate chapter for the important uncertainty
NASA’s Aging Into Gianthood focuses on how the Sun’s expansion and mass loss may affect planetary orbits. It is the more useful source when the question shifts from “What happens to the Sun?” to “What happens to Earth and the planets?”
What it says about the inner planets
Mercury and Venus are expected to be engulfed as the Sun expands. Earth’s outcome is not settled: NASA’s chapter says recent modeling suggests Earth probably will not make it out intact, while NASA’s newer Webb report describes Mercury, Venus and “possibly the Earth” as planets that may be engulfed. Do not turn those qualified statements into certainty that Earth definitely will be swallowed.
What it says about the outer planets
As the Sun loses mass, its gravitational hold weakens and surviving planetary orbits 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 a precise final orbit for each planet. NASA’s 2026 Webb report says the fate of more distant planets, particularly gas giants, remains unclear.
Use the Webb result as an observed analogue, not a forecast
NASA’s Webb report, published July 1, 2026, describes observations of WD 1856 b, a Jupiter-sized object orbiting a white dwarf. It is an example of a planet around a stellar remnant, and observations of such systems can inform models of what planetary systems may look like after a star evolves. It is not a direct observation of the future Solar System: WD 1856 b orbits a different star, so its survival does not prove that Jupiter or any other Solar System planet will survive.
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Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →For context, NASA reports that WD 1856 b completes an orbit every 34 hours at a separation of less than two million miles (three million kilometers). The report gives its mass as between four and eleven Jupiter masses and its measured temperature as about 260°F (126°C). These figures describe WD 1856 b and its system; they should not be transferred to predictions about our planets.
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Judge each claim by its evidence and precision
When two NASA pages sound different, compare what each claim is about and what kind of evidence supports it. The undated explainers provide stable background on stellar evolution and rounded timelines; the July 1, 2026 Webb article reports observations of a particular white-dwarf system and explicitly preserves uncertainty about our own distant planets.
- Separate observation from prediction: Webb data describe WD 1856 b and its white dwarf. Predictions about the Sun and its planets come from stellar and orbital models.
- Keep the claim’s scope in view: A general account of a Sun-like star’s evolution does not settle the outcome for a specific planet such as Earth.
- Preserve the source’s uncertainty: “Possibly,” “probably” and “unclear” carry meaning. Do not replace them with an unsupported yes-or-no answer.
- Match precision to the source: “About five billion years” and “about twice today’s distances” are rounded educational estimates, not exact countdowns or planet-by-planet forecasts.
- Check the publication date: The Webb report is dated July 1, 2026. The NASA explainers are undated, so do not describe them as new findings.
Know which dramatic endings do not fit the Sun
The Sun is not expected to explode as a supernova or become a neutron star or black hole. NASA explains that it lacks the mass required for those endpoints; the expected remnant is a white dwarf. This is a useful check when a source describes the Sun’s future in more dramatic terms.
Quick Recap
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A practical reading order
- Read NASA’s Types of Stars for the main-sequence, red-giant and white-dwarf sequence and its rounded timescales.
- Read NASA Solar System Exploration’s In Depth: Sun for a concise Solar System-oriented overview, including the caveat about whether Earth is engulfed.
- Read Aging Into Gianthood for the interaction of solar expansion, mass loss, tidal effects and planetary orbits—and for the limits on what can be said about Earth.
- Read the July 1, 2026 Webb report for an observed example of a planet around a white dwarf, while keeping that exoplanet system distinct from our own.
- Use NASA’s explanation of why the Sun will not become a black hole if you need to check claims about the Sun’s possible endpoint.
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