A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter.
To confirm the presence of a planet, it is necessary to wait until it has made one or more revolutions around its star. This can take from a few days for the closest to the star to decades for the furthest away. Only a telescope dedicated to the search for exoplanets can carry out such measurements over such long periods of time, which is the case of the EULER telescope of UNIGE.
A team of astronomers, including Nader Haghighipour from the Institute for Astronomy at the University of Hawaii at Manoa, discovered a third planet in the circumbinary planetary system Kepler-47.
Two new studies by UA space scientists, one on high-energy particles and the other on tidal forces, may bring into question the habitability of TRAPPIST-1 exoplanets.
An international team of astronomers has discovered a new way to spot when collisions occur in distant galaxies between two neutron stars -- incredibly dense, city-sized celestial bodies that possess the most powerful magnetic fields in the universe. The team's findings validate predictions first made in 2013 by UNLV astrophysicist Bing Zhang, a member of the research team and one of the study's corresponding authors.
NASA's Transiting Exoplanet Survey Satellite, TESS, has discovered its first Earth-sized exoplanet. The planet, named HD 21749c, is the smallest world outside our solar system that TESS has identified yet.
The SDSU-led research has been published in the Astronomical Journal.
A team of astronomers used a newly commissioned radio telescope in South Korea to make the first high-resolution observations of the molecular clouds within a star-forming region of the Milky Way. The first good look at the galactic region indicated large molecular clouds about 180 light years across with a mass equal to about 100,000 masses of our sun. A paper describing the observations has been accepted by the Astrophysical Journal.
We gaze up at them, we wish upon them, we even sing about swinging on them. But the one thing we haven't been able to do with a star is figure out how big it is...until now.
A nearby system hosts the first Earth-sized planet discovered by NASA's Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world. This milestone sets the path for finding smaller planets around even smaller stars, and those planets may potentially be habitable.