What did Gravity predict?

Debris from a destroyed satellite forces crews in orbit to take emergency action (arrived); One debris cloud wrecks a shuttle, a telescope and two space stations in different orbits within about ninety minutes (diverged); Collisions in low Earth orbit feed on themselves until some regions are too dangerous to use (Kessler syndrome) (near); A Chinese crewed space station operates in orbit, and its capsule can serve as a lifeboat (arrived).

When will Gravity's predictions come true?

Nearfi estimates the next one around 2065.

P(n) Board › Gravity

Prediction ledger · Film · 2013 · set in Unspecified near future (low Earth orbit)

Did Gravity come true?

Quick answer

Partly. Gravity (2013) has a P(n) of 52% on Nearfi's P(n) Board, our estimate of the chance its future arrives within 20 years. Of its 4 tracked predictions, 2 have arrived and 0 are arriving. Its central premise, 'Debris from a destroyed satellite forces crews in orbit to take emergency action', has arrived. The next prediction is estimated to arrive around 2065.

Gravity was right that a destroyed satellite can endanger crewed spacecraft and that debris is a shared, slow-building hazard. It was wrong on speed: a real debris cloud spreads over years, not into a ninety-minute wipe-out of every station in orbit.

Read the review · 7.8/10 →

P(n) · by 2046

52%

P50 · by 2076

61%

Here now

47%

Claims

Next likely arrival

2065

How this P(n) was calculated

P(n) is the chance that this work's future arrives within 20 years, by 2046. For each prediction we turn our estimate into a probability: arrived is 100%, diverged is 0%, and otherwise the low end of our 80% range counts as a 10% chance, the median year 50% and the high end 90%. Each prediction is weighted 1–5 by how pivotal it is to the story, and P(n) is the weighted average. P50 does the same by 2076. P(n), explained.

Claim	Prediction · why this weight	Weight	Status · estimate	By 2046	By 2076
GRAV-1	Debris from a destroyed satellite forces crews in orbit to take emergency action. Core premise: the film begins with a debris strike from a destroyed satellite and everything follows from it.	5	ARRIVED arrived 2021	100%	100%
GRAV-2	One debris cloud wrecks a shuttle, a telescope and two space stations in different orbits within about ninety minutes. Core premise: the film's single, repeating ninety-minute debris wave is its engine of suspense.	5	DIVERGED —	0%	0%
GRAV-3	Collisions in low Earth orbit feed on themselves until some regions are too dangerous to use (Kessler syndrome). Major: the film dramatises the cascade idea and it is the central theme, though the plot never depends on the long timescale.	4	NEAR 2065 (2040–2120)	20%	58%
GRAV-4	A Chinese crewed space station operates in orbit, and its capsule can serve as a lifeboat. Supporting: the last act depends on reaching a Chinese station and capsule, but any lifeboat would have served the plot.	3	ARRIVED arrived 2021	100%	100%
	P(n) = P20 = Σ(weight × chance by 2046) ÷ Σ weight = 8.8 ÷ 17 = 52%
	P50 = 10.3 ÷ 17 = 61%

Already here today (arrived 1, arriving ½, weighted): 47%.

GRAV-1

Debris from a destroyed satellite forces crews in orbit to take emergency action.

ARRIVEDCore premiseArrived 2021Confidence: high

Weight 5/5 · Core premise: the film begins with a debris strike from a destroyed satellite and everything follows from it.

On 15 November 2021 Russia destroyed its Kosmos 1408 satellite with a missile. More than 1,500 pieces were tracked, and the seven ISS crew sheltered in their Crew Dragon and Soyuz ships for about two hours. NASA judged that only two of the highest-risk passes needed it. A Chinese crew then had to change ships after a suspected debris impact in 2025. 1 2 3
GRAV-2

One debris cloud wrecks a shuttle, a telescope and two space stations in different orbits within about ninety minutes.

DIVERGEDCore premiseNo arrival expected in this formConfidence: high

Weight 5/5 · Core premise: the film's single, repeating ninety-minute debris wave is its engine of suspense.

Real fragmentation events spread debris over years across shells of orbit, not into a coordinated wave that strikes objects in different orbital planes within hours. Scientists and astronauts criticised the film for this, and the film's makers conceded they took liberties. 4 5
GRAV-3

Collisions in low Earth orbit feed on themselves until some regions are too dangerous to use (Kessler syndrome).

NEARMajorEst. 2065 · range 2040–2120+Confidence: low

Weight 4/5 · Major: the film dramatises the cascade idea and it is the central theme, though the plot never depends on the long timescale.

The idea dates to Kessler and Cour-Palais in 1978. ESA's 2026 report says new-payload numbers kept growing exponentially in 2025 and that non-deliberate fragmentations are stable at about 9.8 a year over twenty years. Some regions already carry long-lived debris, but nothing has yet rendered an orbit unusable. The date is wide because it depends on disposal rules and removal. 6 7 8
GRAV-4

A Chinese crewed space station operates in orbit, and its capsule can serve as a lifeboat.

ARRIVEDSupportingArrived 2021Confidence: high

Weight 3/5 · Supporting: the last act depends on reaching a Chinese station and capsule, but any lifeboat would have served the plot.

China has crewed its Tiangong station since 2021. In November 2025 its Shenzhou-20 crew came home in the newly arrived Shenzhou-21 ship after their own capsule's window cracked. 9 10 11

Evidence

FOR U.S. officials: Space station at risk from 'reckless' Russian anti-satellite test. Spaceflight Now, 2021-11-15. ISS crew sheltered in Crew Dragon and Soyuz; more than 1,500 trackable pieces.
FOR Kosmos 1408. Wikipedia, 2021-11-15. Summarises the test and says the debris spans roughly 300 to 1,000 km, threatening any satellite in low Earth orbit.
FOR China's Shenzhou 20 astronauts return to Earth on different spacecraft after finding window cracks in their own. Space.com, 2025-11-14. A suspected debris impact cracked a Shenzhou-20 window and the crew came home in another ship.
AGAINST Gravity (2013 film). Wikipedia, 2013-10-04. Records criticism from Tyson, Plait and Parazynski about orbital planes and the jetpack hop; Cuarón acknowledged liberties.
CONTEXT 2009 satellite collision. Wikipedia, 2009-02-10. The first accidental collision of two intact satellites left debris that spread across orbit over time.
FOR ESA's Annual Space Environment Report (Issue 10.0). ESA Space Debris Office, 2026-05-01. Exponential growth in new payloads continued in 2025; about 9.8 non-deliberate fragmentations a year over the last two decades.
CONTEXT Kessler syndrome. Wikipedia, 1978-06-01. Describes the 1978 Kessler and Cour-Palais paper and the 2007 and 2021 anti-satellite tests.
AGAINST ESA Space Environment Report 2026. European Space Agency, 2026-05-01. ESA frames mitigation guidelines and disposal as the lever; the report is a status audit, not a forecast of runaway collapse.
FOR Tiangong space station. Wikipedia, 2021-06-17. Describes the crewed station.
FOR Chinese astronauts return from space station after delay blamed on space debris damage. PBS NewsHour, 2025-11-14. The Shenzhou-20 crew returned in another capsule after suspected debris damage.
CONTEXT Repaired Shenzhou-20 Returns to Earth Empty. SpacePolicyOnline, 2025-12. The damaged capsule returned uncrewed after a patch.

Ledger updated 4 Nov 2026. All works on the P(n) Board · Method