Artistic concept of two exoplanets transiting in front of the TRAPPIST-1 star (Image NASA/ESA/STScI/J. de Wit (MIT))

An article published in the journal “Nature” describes a research on two exoplanets of the TRAPPIST-1 system. A group of researchers led by Julien de Wit of the Massachusetts Institute of Technology in Cambridge, Massachusetts used the Hubble and Spitzer space telescopes to better examine two of the three exoplanets whose discovery was announced in May 2016.

Artistic concept of the V883 Orionis system with its protoplanetary disc and the snow in it (Image A. Angelich (NRAO/AUI/NSF)/ALMA (ESO/NAOJ/NRAO))

An article published in the journal “Nature” describes the first observation ever of the water snow line in the V883 Orionis system. Using the ALMA radio telescope, a team led by Lucas Cieza of the Universidad Diego Portales, Santiago, Chile, identified the distance from the star beyond which the temperature drops enough for water to freeze.

Artistic representation of the HD 131399 system with its exoplanet and its three stars (Image ESO/L. Calçada)

An article published in the journal “Science” describes the discovery of the exoplanet HD 131399Ab, the first ever found in a system with three suns. A team of astronomers led by the University of Arizona used the SPHERE instrument mounted on ESO’s VLT to obtain a direct image of HD 131399Ab and its system’s three stars. Scientists thought that such an orbit was unstable but this case seems to contradict that idea.

Artist's impression of the simultaneous stellar eclipse with the planetary transit events by Kepler-1647b (Image Lynette Cook)

An article published in “The Astrophysical Journal” describes the study of the planet’s characteristics circumbinary Kepler-1647b. By using the Kepler space telescope NASA, a team of scientists at NASA’s Goddard Space Flight Center and the San Diego State University led by Veselin Kostov discovered this planet that orbits two stars. This is not the first case of this kind but it’s the biggest and its year is longer, about three Earth’s years.