Kosmos 482 spacecraft, built for Venus landing, to reenter Earth’s atmosphere after 53 years

Kosmos 482, a Soviet spacecraft launched on March 31, 1972, is expected to reenter Earth’s atmosphere between May 8 and 11, 2025 — after 53 years in space. Originally intended to land on Venus, the spacecraft became stranded in Earth’s orbit after a premature engine cutoff during its launch phase.

The descent module, weighing approximately 495 kg (1 090 pounds), was designed to survive the extreme conditions of Venus’s dense and hot atmosphere. Due to its robust construction, experts consider it likely that some parts of the spacecraft will survive atmospheric reentry and could reach Earth’s surface, unlike most reentering space debris, which disintegrates entirely.

Kosmos 482 comprised a carrier bus and a descent module with a total mass of 1 184 kg (2 610 pounds) at launch. After achieving an elliptical Earth orbit of approximately 210 km x 9 800 km (130 x 6 090 miles), an incomplete engine burn left the spacecraft stranded instead of transferring to Venus.

The descent module, a spherical pressure vessel similar to that of the Venera 7 probe, was equipped with scientific instruments, including temperature and pressure sensors, a gamma-ray spectrometer, and radio transmitters. Following the Soviet practice, the mission received a “Kosmos” designation after failing to leave Earth’s orbit.

The spacecraft’s orbital inclination of 52 degrees means it could reenter anywhere between 52°N and 52°S latitude. This reentry zone covers most of Earth’s populated regions, excluding far northern areas such as northern Canada and Scandinavia, and far southern regions such as Antarctica — basically the entire world. However, statistical models indicate that most debris from uncontrolled reentries falls into oceans or sparsely populated regions.

Kosmos 482’s original mission was part of the Soviet Union’s Venera program, aimed at exploring Venus. After the failure to escape Earth’s orbit, the spacecraft entered a slow orbital decay, which is now culminating in reentry after 53 years in space.

Tracking organizations, including the Aerospace Corporation and SatTrackCam Leiden, are monitoring the spacecraft’s trajectory closely.

As of now, no official statements have been issued by Russian authorities regarding Kosmos 482’s reentry. Predictions on exact reentry timing and location will likely improve as the date approaches.

Shortly after its launch in 1972, parts of Kosmos 482 already reentered Earth’s atmosphere. At around 01:00 LT on April 3, 1972, four titanium alloy spheres, each approximately 38 cm (15 inches) in diameter and weighing about 13.6 kg (30 pounds), landed within a 16 km (10 miles) radius near Ashburton, New Zealand. Their re-entry was witnessed by multiple observers on the South Island.

The spheres caused localized crop damage and deep craters but resulted in no injuries. A similar object was discovered near Eiffelton, New Zealand, in 1978, believed to be related to the same reentry event.

References:

¹ Kosmos 482 Descent Craft reentry forecasts – SatTrackCam – Accessed April 28, 2025

² NSSDCA/COSPAR ID: 1972-023A – NSSDC/GSFC – Accessed April 28, 2025

Teo Blašković

I'm a dedicated researcher, journalist, and editor at The Watchers. With over 20 years of experience in the media industry, I specialize in hard science news, focusing on extreme weather, seismic and volcanic activity, space weather, and astronomy, including near-Earth objects and planetary defense strategies. You can reach me at teo /at/ watchers.news.

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