Related Experiment Video
Updated: Mar 1, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
11.0K
The Rosetta mission orbiter science overview: the comet phase
M G G T Taylor1, N Altobelli2, B J Buratti3
1ESA/ESTEC, 2201 AZ Noordwijk, The Netherlands mtaylor@esa.int.
Summary
The Rosetta mission studied Comet 67P/Churyumov-Gerasimenko, providing insights into cometary evolution and Solar System origins. It mapped the comet and examined its surface and environment in situ.
Area of Science:
- Planetary Science
- Cometary Science
- Solar System Exploration
Background:
- The Rosetta mission, launched in 2004, was the first to orbit and land on a comet.
- Comet 67P/Churyumov-Gerasimenko was studied to understand cometary evolution and Solar System origins.
Purpose of the Study:
- To map Comet 67P/Churyumov-Gerasimenko using remote sensing.
- To analyze the comet's environment and evolution in the inner Solar System.
- To characterize the nucleus, composition, and activity of the comet.
Main Methods:
- Orbiter remote sensing of Comet 67P/Churyumov-Gerasimenko.
- In situ analysis of the comet's surface and environment by the Philae lander.
- Long-term observation of the comet's journey through the inner Solar System.
Main Results:
- Detailed mapping of Comet 67P/Churyumov-Gerasimenko's nucleus.
- Characterization of the comet's volatile and refractory materials.
- Insights into cometary activity and surface processes.
Conclusions:
- The Rosetta mission significantly advanced our understanding of comets and their role in Solar System formation.
- Data from Rosetta provides crucial information on the relationship between cometary, interstellar, and Solar System materials.
- The mission's findings contribute to understanding the origins of the Solar System.
Related Concept Videos
Rocket Propulsion in Empty Space - I
3.9K
The driving force for the motion of any vehicle is friction, but in the case of rocket propulsion in space, the friction force is not present. The motion of a rocket changes its velocity (and hence its momentum) by ejecting burned fuel gases, thus causing it to accelerate in the direction opposite to the velocity of the ejected fuel. In this situation, the mass and velocity of the rocket constantly change along with the total mass of ejected gases. Due to conservation of momentum, the...
3.9K
Rocket Propulsion In Empty Space - II
3.6K
The motion of a rocket is governed by the conservation of momentum principle. A rocket's momentum changes by the same amount (with the opposite sign) as the ejected gases. As time goes by, the rocket's mass (which includes the mass of the remaining fuel) continuously decreases, and its velocity increases. Therefore, the principle of conservation of momentum is used to explain the dynamics of a rocket's motion. The ideal rocket equation gives the change in velocity that a rocket...
3.6K
Rocket Propulsion in Gravitational Field - II
2.9K
A rocket's velocity in the presence of a gravitational field is decreased by the amount of force exerted by Earth's gravitational field, which opposes the motion of the rocket. If we consider thrust, that is, the force exerted on a rocket by the exhaust gases, then a rocket's thrust is greater in outer space than in the atmosphere or on a launch pad. In fact, gases are easier to expel in a vacuum.
A rocket's acceleration depends on three major factors, consistent with the...
A rocket's acceleration depends on three major factors, consistent with the...
2.9K
Rocket Propulsion in Gravitational Field - I
3.4K
Rockets range in size from small fireworks that ordinary people use to the enormous Saturn V that once propelled massive payloads toward the Moon. The propulsion of all rockets, jet engines, deflating balloons, and even squids and octopuses are explained by the same physical principle: Newton's third law of motion. The matter is forcefully ejected from a system, producing an equal and opposite reaction on what remains.
The motion of a rocket in space changes its velocity (and hence its...
The motion of a rocket in space changes its velocity (and hence its...
3.4K
Impact: Problem Solving
488
In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
488
Circular Orbits and Critical Velocity for Satellites
5.6K
The Moon orbits around the Earth. In turn, the Earth (and other planets) orbit the Sun. The space directly above our atmosphere is filled with artificial satellites in orbit. One can examine the circular orbit, the simplest kind of orbit, to understand the relationship between the speed and the period of planets and satellites with respect to their positions and the bodies that they orbit.
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
Nicolaus Copernicus (1473-1543) first suggested that the Earth and all other planets orbit the Sun in...
5.6K

