Topic: Solar Systems
Stellar side swipes can send unseatbelted planets flying

Stellar side swipes can send unseatbelted planets flying

Illustration of a poorly lit planet. Credit: NASA, JPL-Caltech, and R. Hurt I’ve said it before, and I’m sure I’ll say it again - our understanding of the solar system advances at the pace of technology. As our processing power grows, we are able to do more and more complex calculations, and the spherical cows we had to assume to make the math easier are now getting replaced with real physics. In general, we don’t actually worry about cows unless atmospheric science — like the study of tornadoes and the air dynamics of cows — are being contemplated. Planetary scientists are fortunate, as...

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Closer Look: Mars is the Future

Closer Look: Mars is the Future

Since Mars Spirit and Opportunity first set down on Mars in 2004, there has been a continuous robotic presence on the Red Planet. The Phoenix and Insight Landers have answered specific questions about Mars composition and interior, while a small herd of rovers have...

When Orbits Go Weird

When Orbits Go Weird

orbital path of transiting exoplanet TIC 241249530 b As of the day of this recording, Aug 8, 2024, more than 5600 exoplanets have been discovered orbiting more than 4000 alien stars. Within these systems we are regularly finding things our experiences with our own...

JWST Catches Difference in Sunrise and Sunset

JWST Catches Difference in Sunrise and Sunset

an artist's concept of the exoplanet WASP-43b Anyone who likes to exercise outside can tell you the sunrise side of the day is far cooler than the evening twilight. Here on Earth, with our rotating world, this is easy to understand. Throughout the night, our planet...

Titan’s Lakes May Have Shoreline Erosion

Titan’s Lakes May Have Shoreline Erosion

Image Credit: Cassini Mission Here on Earth we often talk about planetary analogues. These are areas where the landscape here on our planet is geological similar to other worlds. There are regions in the Atacama desert, for instance, that are very similar to Mars. ...

Lava Lakes on Io Images in Infrared

Lava Lakes on Io Images in Infrared

I don’t think there is an astronomer who doesn’t love a pretty high resolution image of …well… pretty much anything in space. Give me a crisp clear galaxy, or a nebula, or even a quiet frost field on another planet and I will happily stare at the pretty picture. But...

Jupiter’s Not-enduring Red Spot

Jupiter’s Not-enduring Red Spot

Image credit: NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstadt/Justin Cowart It turns out, Jupiter likes to have giant red spots, but it doesn’t always have the same giant red spot. New research led by Agustin Sanchez-Lavega and appearing in Geophysical Research letters...

Vibrant Auroras shine on Mars

Vibrant Auroras shine on Mars

The purple color in this video shows auroras on Mars’ nightside as detected by the ultraviolet instrument aboard NASA’s MAVEN orbiter between May 14 and 20, 2024. The brighter the purple, the more auroras that were present. Credit: NASA/University of...