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Related Concept Videos

Atomic Emission Spectroscopy: Interference01:30

Atomic Emission Spectroscopy: Interference

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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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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...
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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...
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Escape Velocity

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The escape velocity of an object is defined as the minimum initial velocity that it requires to escape the surface of another object to which it is gravitationally bound and never to return. For example, what would be the minimum velocity at which a satellite should be launched from the Earth's surface such that it just escapes the Earth's gravitational field?
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Scattering And Absorption of Light in Planetary Regoliths
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The Comet Interceptor Mission.

Geraint H Jones1,2, Colin Snodgrass3, Cecilia Tubiana4

  • 1Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, UK.

Space Science Reviews
|January 29, 2024
PubMed
Summary
This summary is machine-generated.

The Comet Interceptor mission will study a pristine comet or interstellar object, providing unique insights into Solar System formation and cometary interactions with the solar wind.

Keywords:
CometsInstruments – spaceborne and space researchSpacecraft

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Area of Science:

  • Planetary Science
  • Cometary Science
  • Solar System Exploration

Background:

  • Long-period comets and interstellar objects offer unique insights into the early Solar System.
  • Previous cometary missions have not studied pristine objects or provided multi-point, spatially resolved data.
  • The European Space Agency's (ESA) F-Class mission call enabled the development of a fast, flexible, low-cost mission.

Purpose of the Study:

  • To investigate the surface composition, shape, morphology, and structure of a pristine comet or interstellar object.
  • To analyze the composition of cometary gas and dust and its relationship to the nucleus.
  • To understand the comet's interaction with the solar wind.

Main Methods:

  • The Comet Interceptor mission, launched in 2029, will travel to a halo orbit around the Sun-Earth L2 point.
  • The mission will intercept a suitable long-period comet or interstellar object.
  • A main spacecraft and two sub-probes (B1 from JAXA and B2) will perform simultaneous, spatially resolved measurements at varying distances (1000 km, 850 km, and 400 km) from the nucleus.

Main Results:

  • The mission will provide unprecedented, simultaneous, 3-dimensional data on a near-pristine comet or interstellar object.
  • Detailed information on the composition and structure of the nucleus, coma, and their interaction with the solar wind will be obtained.
  • This will offer a unique glimpse into the formation and evolution of the Solar System.

Conclusions:

  • Comet Interceptor will be the first mission to study a pristine long-period comet or interstellar object in situ.
  • The multi-point measurements will revolutionize our understanding of cometary science and Solar System origins.
  • The mission's design allows for flexibility in targeting and maximizing scientific return.