This is an artist's concept of the nearby exoplanet LTT 1445Ac, which is the size of Earth. The planet orbits a red dwarf star. The star is in a triple system, with two closely orbiting red dwarfs seen at upper right. The black dot in front of the bright light-red sphere at image center is planet LTT 1445Ac transiting the face of the star.

NASA’s Hubble Measures the Size of the Nearest Transiting Earth-Sized Planet

The diminutive planet, LTT 1445Ac, was first discovered by NASA's Transiting Exoplanet Survey Satellite (TESS) in 2022. But the geometry of the ...
NASA's Hubble Finds Bizarre Explosion in Unexpected Place and Gemini South Captures Cosmic ‘Finch’

NASA’s Hubble Finds Bizarre Explosion in Unexpected Place and Gemini South Captures Cosmic ‘Finch’

A very rare, strange burst of extraordinarily bright light in the universe just got even stranger – thanks to the ...
STScI: Neptune's Disappearing Clouds Linked to the Solar Cycle

STScI: Neptune’s Disappearing Clouds Linked to the Solar Cycle

Astronomers have uncovered a link between Neptune's shifting cloud abundance and the 11-year solar cycle, in which the waxing and ...
STScI: Hubble Sees Boulders Escaping from Asteroid Dimorphos

STScI: Hubble Sees Boulders Escaping from Asteroid Dimorphos

The popular 1954 rock song "Shake, Rattle and Roll," could be the theme music for the Hubble Space Telescope's latest ...
Thousands of bright points of light on a black background fill the field of view. They appear somewhat more concentrated near the center of the image. They have a variety of colors, with the most prominent stars appearing blue or yellow-orange. The brighter stars also display four diffraction spikes.

STScI: NASA’s Hubble Hunts for Intermediate-Sized Black Hole Close to Home

Astronomers using NASA's Hubble Space Telescope have come up with what they say is some of their best evidence yet ...
STScI: Hubble Sees Possible Runaway Black Hole Creating a Trail of Stars

STScI: Hubble Sees Possible Runaway Black Hole Creating a Trail of Stars

There's an invisible monster on the loose, barreling through intergalactic space so fast that if it were in our solar ...
Our Mysterious Universe Still Evades Cosmological Understanding

Our Mysterious Universe Still Evades Cosmological Understanding

Science can uncover new knowledge, but it can also reveal what we don’t understand. New research is shedding light on ...
STScI: Didymos-Dimorphos System After DART Impact

STScI: Didymos-Dimorphos System After DART Impact

Like a sports photographer at an auto-racing event, NASA's Hubble Space Telescope captured a series of photos of asteroid Dimorphos ...
STScI: Hubble Finds Hungry Black Hole Twisting Captured Star Into Donut Shape

STScI: Hubble Finds Hungry Black Hole Twisting Captured Star Into Donut Shape

Astronomers using NASA's Hubble Space Telescope have recorded a star's final moments in detail as it gets gobbled up by ...
STScI: Hubble Captures 3 Faces of Evolving Supernova in Early Universe

STScI: Hubble Captures 3 Faces of Evolving Supernova in Early Universe

Three different moments in a far-off supernova explosion were captured in a single snapshot by NASA's Hubble Space Telescope. The ...
STScI: NASA’s Hubble Spots Twin Tails in New Image After DART Impact

STScI: NASA’s Hubble Spots Twin Tails in New Image After DART Impact

Two tails of dust ejected from the Didymos-Dimorphos asteroid system are seen in new images from NASA’s Hubble Space Telescope, ...
STScI: Webb, Hubble Capture Detailed Views of DART Impact

STScI: Webb, Hubble Capture Detailed Views of DART Impact

Two of NASA’s Great Observatories, the James Webb Space Telescope and the Hubble Space Telescope, have captured views of a ...