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What are Chandra, Fermi, and TESS known for?

What is Chandra known for?

Chandra’s first snapshot of supernova remnant Cassiopeia A showed astronomers a mysterious source at the center that could be a rapidly spinning neutron star or black hole.

In the Crab Nebula, it was possible to distinguish shock waves around the central pulsar, invisible to other telescopes.

With the help of the Chandra X-ray observatory, scientists have refined the Hubble constant, the number that determines the rate of expansion of the universe.

The collision of superclusters of galaxies provided evidence of the existence of dark matter.

Using data from the telescope, scientists have observed the largest X-ray flare ever detected from a supermassive black hole at the center of the Milky Way galaxy.

Images showing a highly distorted supernova remnant called W49B have led scientists to suspect the presence of the most recent black hole formed in the Milky Way galaxy.

A new type of black hole has been discovered in the galaxy M82.

What is Fermi known for?

The first scientific result of the telescope was the detection of a gamma-ray pulsar located in the supernova remnant CTA 1, which became the first known object “blinking” only in gamma rays.

On September 15, 2008, Fermi detected a record burst of gamma rays in the constellation Carina, designated as GRB 080916 °C. The power of the explosion exceeded the power of about 9 thousand conventional supernovae.

Fermi Bubbles. In 2010, scientists discovered a giant mysterious structure that looks like a pair of bubbles above and below the center of our galaxy. Each lobe is 25,000 light-years high, and together they extend about half the diameter of the Milky Way.

On March 7, 2012, the telescope observed a flare with the highest energy ever seen from a solar eruption. At the peak of the flash, Fermi detected gamma rays 2 billion times the energy of visible light, or about 4 GeV.

The telescope observed numerous gamma-ray flashes (short flashes during thunderstorms associated with lightning) on ​​Earth. He found that they could produce 100 trillion positrons (the antiparticle of the electron, refers to antimatter), far more than scientists had previously thought.

What is TESS known for?

On September 18, 2018, a team of astronomers led by Chelsea Huang of MIT announced the first exoplanet discovered by a telescope in the Pi Mensae star system, about 60 light-years from Earth.

On April 15, 2019, NASA announced the first TESS discovery of an Earth-sized planet. The planet HD 21749c is about 89% of the diameter of the Earth and orbits HD 21749, a K-type star (i.e. orange-colored stars with a surface temperature of 3800 to 5000 K) with a mass of about 70% of the Sun, located at a distance of 53 light years in southern constellation Reticulum. The planet is likely hot, with surface temperatures up to 427 °C.

On January 6, 2020, NASA announced the discovery of TOI 700 d, the first Earth-sized exoplanet in the habitable zone discovered by TESS. The exoplanet orbits the star TOI 700, 100 light-years away in the constellation Dorado.

In January 2021, scientists determined that TYC 7037-89-1 is the first six-star system ever discovered in which all stars participate in eclipses.

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