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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteMore than 40 missions have been launched toward Venus, but that number includes unsuccessful attempts—not 40 successful arrivals. Together, the missions that did return data transformed Venus from a distant point of light into a world measured by flybys, atmospheric probes, landers, orbiters and radar maps.
1. More than 40 missions have been launched toward Venus
NASA’s 2025 Venus overview counts more than 40 missions launched to explore the planet. The figure includes attempts that failed, so it should not be read as the number of spacecraft that reached Venus or completed useful observations. The NASA mission overview chronology shows a record of both setbacks and breakthroughs.
2. Mariner 2 made the first successful close-up study of another planet
NASA’s Mariner 2 flew past Venus on December 14, 1962, becoming the first spacecraft to make successful close-up observations of another planet. It took 110 days to reach Venus and passed within 21,564 miles of the planet, according to NASA’s historical account.
Mariner 2 did not land or enter orbit: it continued into solar orbit after the flyby. During its cruise, the spacecraft also confirmed the solar wind. Its measurements challenged the popular picture of Venus as a mild, tropical world. As project manager Jack N. James later put it, “There will be other missions to Venus, but there will never be another first mission to Venus.”
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3. Early failures came before the first atmospheric and surface successes
The early history of Venus exploration included unsuccessful U.S. and Soviet attempts. A key milestone came with Soviet Venera 4, which became the first probe to transmit data from the atmosphere of another planet. Venera 7 followed as the first successful lander on Venus, according to NASA’s chronology.
Those achievements were different: Venera 4 returned atmospheric measurements, while Venera 7 reached the surface and transmitted from there. Together, they marked a shift from remote observation to direct measurements in Venus’s atmosphere and at the ground.
4. The Venera program tried probes, landers, orbiters and balloons
Venera was not a single kind of mission. Across the program, Soviet spacecraft explored Venus with atmospheric probes, surface landers and orbiters. Later Venera missions added further landings, while the Vega missions combined a Venus lander and an atmospheric balloon with a spacecraft that flew onward past the planet.
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That variety mattered because Venus’s clouds hide the surface from ordinary visible-light observation. Probes and landers could sample conditions directly, while orbiters and flyby spacecraft studied the planet from a distance. NASA’s mission chronology records these milestones.
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5. Pioneer Venus divided its work between an orbiter and atmospheric probes
The United States’ Pioneer Venus campaign used two spacecraft with distinct jobs. Pioneer Venus 1 entered orbit on December 4, 1978, carrying instruments to study the atmosphere, surface radar, magnetic field and other properties. Pioneer Venus 2 was the multiprobe mission: its bus released one large and three small probes into the atmosphere on December 9, 1978.
This pairing let researchers make extended observations from orbit while several probes sampled atmospheric conditions as they descended. NASA’s Pioneer Venus 2 mission page describes the multiprobe mission and its results.
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6. A Pioneer Venus probe transmitted after impact
Two of Pioneer Venus 2’s three small probes survived hitting the surface. The Day Probe continued transmitting surface data for 67 minutes and 37 seconds after impact, until heat, pressure and loss of power ended the signal. That brief transmission added measurements from the ground to the mission’s atmospheric data, as NASA recounts on its mission page.
7. Magellan mapped Venus through its clouds with radar
Visible-light views cannot reveal Venus’s surface through its thick cloud cover, so NASA’s Magellan used radar. It became the first spacecraft to image the entire surface of Venus; after its radar-mapping cycles, NASA reports that it had mapped 98% of the planet.
Magellan was launched from Space Shuttle Atlantis, making it the first deep-space probe launched by a space shuttle. Radar mapping let scientists build a global picture of terrain that earlier missions could not see directly. NASA’s Magellan mission page describes the spacecraft and its mapping.
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8. Magellan revealed extensive volcanic terrain and slowly changing landscapes
Magellan’s radar data indicate that at least 85% of Venus’s surface is covered by volcanic flows. The mission also helped show why surface features can persist for a long time: Venus’s high heat, high pressure and lack of water make erosion extremely slow. According to NASA, some features may remain visible for hundreds of millions of years.
These findings describe a surface shaped by volcanism and preserved under conditions unlike Earth’s. The coverage and geological interpretation are summarized on NASA’s Magellan mission page.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.9. European and Japanese orbiters renewed long-term observations
Venus Express, launched in 2005, was the first European spacecraft to orbit Venus. Its mission added a sustained European presence at the planet after earlier flybys, probes and mapping campaigns. ESA’s Venus Express overview describes the mission.
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Japan’s Akatsuki is listed in NASA’s chronology as a Venus orbiter launched in 2010. The chronology establishes its mission identity and launch year; it is not a current operations update. See NASA’s Venus mission overview.
10. Planned missions will investigate different parts of Venus
NASA and ESA describe three future Venus missions in development. They are plans, not missions that have already returned results. Their goals complement one another:
| Mission | Agency | Planned approach and focus |
|---|---|---|
| DAVINCI | NASA | A probe will investigate Venus from near the cloud tops toward the surface. |
| VERITAS | NASA | An orbiter designed to map the planet and investigate its geology and interior. |
| EnVision | ESA | An orbiter in development focused on Venus’s history, activity and climate; NASA describes its timing broadly as the 2030s. |
The planned investigations differ in method and emphasis: DAVINCI is designed to descend through the atmosphere, while VERITAS and EnVision are orbiters intended to study Venus from space. NASA’s overview and VERITAS mission page describe the NASA plans; ESA outlines EnVision.
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