TESS reveals an improbable planet

Using asteroseismology, a team led by an Instituto de Astrofísica e Ciências do Espaço (IA) researcher studied two red-giant stars known to have exoplanets, and around one of them, found a seemingly improbable planet.

Mini-jet found near Milky Way's supermassive black hole

Our Milky Way's central black hole has a leak. This supermassive black hole looks like it still has the vestiges of a blowtorch-like jet dating back several thousand years. NASA's Hubble Space Telescope hasn't photographed ...

Hubble detects giant 'cannonballs' shooting from star

Great balls of fire! NASA's Hubble Space Telescope has detected superhot blobs of gas, each twice as massive as the planet Mars, being ejected near a dying star. The plasma balls are zooming so fast through space it would ...

Are black holes made of dark energy?

Two University of Hawaii at Manoa researchers have identified and corrected a subtle error that was made when applying Einstein's equations to model the growth of the universe.

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