Exploration of outer space inaccessible tooptical instruments, can be carried out using indirect methods to accurately determine the physical parameters of exoplanets. NASA experts have developed and launched the new NEID tool for astronomical research. The instrument was installed at the Kitt Peak Observatory, Arizona (USA). In essence, NEID is a “cosmic scale” capable of estimating the mass of stars, planets and other large cosmic bodies, and possibly estimating the global mass of galaxies.
NEID Instrument Measurements Based on Studythe gravitational influence of planets on "their" stars. The effect of gravity is directed at both cosmic bodies, and by measuring this effect, it is possible to accurately estimate the mass of small planets inaccessible to other research methods.
For example, the effect of Earth's gravity on the Sun leads to the movement of "our star" at a speed of 0.3 km / h, and Jupiter is already forcing to change the speed of the Sun by 46 km / h.
Earth devices can currentlyto track changes within 3.5 km / h, which does not allow to detect and measure the mass of small planets comparable to the Earth. The advent of the NEID instrument will increase the measurement accuracy to a change of 1 km / h.
When setting up the instrument, scientists are very carefulcalibrate the NEID device to eliminate the influence of other planets and stars on research data. So, for example, the temperature of the device must adhere to the nearest thousandth of a degree.
The first study is aimed at studying the planet Dimidius orbiting about 51 Pegasi, the first Sun-like star discovered by astronomers back in 1995.