abrasice dust
Telescopes, Pictures,Satellites, and Probes
The USSR, Russia, USA, the EU, Britain and Japan. the last two did not succeed with their missions.
The Russians named their space probes that visited Halley's Comet in the mid-1980s as Vega 1 and Vega 2. These probes were part of an international effort involving the Soviet Union, the European Space Agency, and other countries to study the famous comet.
A probe can physically visit celestial bodies to conduct scientific measurements and collect data up close, whereas a telescope can only observe objects from a distance. Probes can provide more detailed and direct information about planetary characteristics, such as composition, atmosphere, and surface features. Telescopes are more limited in their ability to gather detailed data compared to probes.
If landing probes are mentioned, no not yet.
Giotto and Vega 1 & 2 missions in 1986 .
Vega 1 and Vega 2 were the last successful Russian space missions beyond Earth's orbit. These two space probes visited Venus and Halley's Comet in the mid-1980s.
Telescopes, Pictures,Satellites, and Probes
The USSR, Russia, USA, the EU, Britain and Japan. the last two did not succeed with their missions.
The Russians named their space probes that visited Halley's Comet in the mid-1980s as Vega 1 and Vega 2. These probes were part of an international effort involving the Soviet Union, the European Space Agency, and other countries to study the famous comet.
the cassini space crafts mission was too orbit venus and then observe saturns moons
Because there are no moons, scientists have to observe deflections in the paths of space probes to work out the the mass of these planets.(Without going into the details, it is possible to work out the mass of a planet from a moon's orbital data. Even observations of an artificial satellite can be used. Otherwise, we need to observe the trajectories of space probes.)
The range of four probes gives you the material to test the probe. The best way to determine the optimum choice of the probe tip for specifications for a given material is the four points.
4 space probes
Space probes would be safer.
Callisto probes carbon dioxide
Mars Probes was created in 2002.