International astronomers using the NASA/ESA Hubble Space Telescope have made an independent measurement of how fast the Universe is expanding. The newly measured expansion rate for the local Universe is consistent with earlier findings. These are, however, in intriguing...
SEAS researchers suggest that early Mars may have been warmed intermittently by a powerful greenhouse effect, possibly explaining water on the planet's surface billions of years ago. Credit: NASA
The presence of water on ancient Mars is a paradox. There's...
A view of Jupiter's south pole (upper left and lower right) and lab results from a new model of Jupiter's winds (upper right and lower left). Credit: Jonathan Aurnou
One mystery has been whether the jets exist only in the...
The gravitational lensed system BG1429+1202. This picture shows how strong gravitational lensing by a massive galaxy (red color) acts on the light of a very distant galaxy (with bluish color), producing in this case four separate images and increasing...
What would it be like to actually land on Pluto? This movie was made from more than 100 images taken by NASA's New Horizons spacecraft over six weeks of approach and close flyby in the summer of 2015. The...
A multi-wavelength image of the distant massive galaxy cluster, IDCS J1426.5+3508 (X-rays from Chandra in blue, visible light from Hubble in green, and infrared data from Spitzer in red). A new millimeter wavelength study of massive clusters with the...
An artist's rendering of an exoplanet is shown. An exoplanet is a planet that exists outside Earth's solar system. Credit: NASA/Ames/JPL-Caltech
Is there anybody out there? The question of whether Earthlings are alone in the universe has puzzled everyone from...
This ALMA image of an enormous sunspot was taken at a wavelength of 1.25 millimeters. Sunspots are transient features that occur in regions where the sun's magnetic field is extremely concentrated and powerful. They have lower temperatures than their...
A plot of the flux incident on an exoplanet (in units of the amount on Earth) versus the host star's temperature. The plot shows two ranges for the habitable zone, conservative green area) and optimistic (yellow area); it also...
An artist's representation of what the three unusual tails of the pulsar Geminga may look like close up. NASA's Chandra X-ray Observatory is giving astronomers a better look at pulsars and their associated pulsar wind nebulae, enabling new constraints...
A team of University of Notre Dame astrophysicists led by Peter Garnavich, professor of physics, has observed the unexplained fading of an interacting binary star, one of the first discoveries using the University's Sarah L. Krizmanich Telescope.
The binary star,...
