Fictitious force
An observer who is not an inertial observer must introduce additional forces, if he wants to explain the motion of the bodies around him with the help of the mechanical law "force equals mass times acceleration". These additional forces are called fictitious ...
VLBI (Very long baseline interferometry)
A method of interconnecting two or even more radio telescopes over long distances (very large baseline distances between telescopes) in such a way that they can be used, in some respects, like a single large telescope. This is done by exploiting the wave ...
Apsis
Points on the elliptical orbit of a planet or other heavenly body around a central star. The apses are the two main vertices of the ellipse. Here the perihelion is the point with the shortest distance to the focal point. The aphelion, the point with the ...
GRAVITY
GRAVITY is part of the Very Large Telescope Interferometer (VLTI) at the European Southern Observatory in Chile. The instrument operates in the near infrared and combines the light of four telescopes, whereby it achieves the spatial resolution of an ...
Event Horizon Telescope
The Event Horizon Telescope (EHT) is an array of radio telescopes that are distributed around the globe. Using Very Long Baseline Interferometry (VLBI), they detect cosmic signals. Because of their large distance to one another, they achieve a significantly ...
third-generation gravitational-wave detector
Third-generation gravitational-wave detectors are supposed to measure gravitational waves with higher sensitivity than current detectors such as Advanced LIGO or Advanced Virgo. Examples for such projects are the Einstein telescope and Cosmic Explorer. More ...
Cosmic Explorer
Cosmic Explorer is a proposed third generation gravitational wave detector, which, together with other third generation detectors like the Einstein telescope, is supposed to allow for gravitational wave detection with greater sensitivity than ever before. The ...
Einstein telescope
The Einstein Telescope is a proposed third generation gravitational wave detector, which is supposed to deliver measurements 10 time more accurate than Advanced Virgo or Advanced LIGO. Its arms are planned to be 10 kilometers long, allowing for a deeper look ...
