|Names||Europa Lander (2009–2011)|
|Mission type||Reconnaissance by orbiter and lander|
|Mission duration||≥ 10 years|
|Launch mass||orbiter: 4,000 kg (8,800 lb) |
lander: 950 kg (2,090 lb)
|Dry mass||orbiter: 2,260 kg (4,980 lb) |
lander: 550 kg (1,210 lb)
|Payload mass||orbiter: 50 kg (110 lb) |
lander: 60 kg (130 lb) 
|Start of mission|
|Launch date||2026 (proposed)|
|Rocket||Angara-A5 with the KVTK upper stage|
|PeriJovian altitude||900,000 km (560,000 mi)|
|ApoJovian altitude||20,000,000 km (12,000,000 mi)|
|Landing date||2030 (proposed)|
Laplace-P (formerly called Europa Lander) is a proposed orbiter and lander by the Russian Federal Space Agency designed to study the Jovian moon system and explore Ganymede with a lander.
Russia has expressed an interest in flying their lander with the Jupiter Icy Moon Explorer (JUICE) in 2022, but as yet the current Laplace-P concept is for an orbiter and lander to be launched on a heavy-lift rocket in 2023, if the mission is launched.
The Europa Lander would have been launched in 2020s as part of the Europa Jupiter System Mission proposed in 2007 by the ESA, that would have studied the Jovian moon system as well as the planet Jupiter. The orbiter would have done several flybys of other Jovian moons before being placed in orbit around Europa. The lander would have researched the ocean underneath the ice sheet of Europa. However, to avoid the damaging effects of Jupiter's radiation belts, the destination of the lander was switched in 2011 from Europa to Ganymede. Ganymede is the largest moon in the Solar System and has an internal ocean that may contain more water than all of Earth's oceans together.
The orbiter would perform 13 flybys of Ganymede, and 4 flybys of Callisto and carry up to 50 kg (110 lb) of scientific instruments, while the Europa lander would have carried up to 70 kg (150 lb) of scientific instruments.
Laplace-P would be a dual mission featuring an orbiter (code name LP1) and a lander (code name LP2) to be launched together toward Jupiter. One spacecraft would orbit the moon Ganymede, while the lander would perform a soft landing on its surface. The "P" in Laplace-P stands for "posadka" (landing).
The planned trajectory is to use the VEEGA (Venus-Earth-Earth Gravity Assist) route. Both spacecraft would be carrying about 50 kg (110 lb) of scientific instruments each. The lander would be powered by an RTG, while the orbiter would be equipped either with an RTG or with solar panels. If the lander is launched together with JUICE, then the Russian orbiter would be omitted due to JUICE filling its role. The advanced Russian project Laplace-P orbiter's objectives is to map the surface for lander. The main objective of the lander is to carry out remote and in-situ investigations of Ganymede's surface.
The radiation conditions on the Ganymede surface are fairly benign. On the other hand, the Ganymedean gravitational parameter (GM = 9887.8 km3/s2) makes the landing on it from the orbit more difficult than in the case of Europa.
The main objectives of the mission are to study Ganymede's atmosphere, its icy surface, assess Ganymede's habitability, and perform an in-situ search for biosignatures.