Astronomers have found that Barnard's star -- a very close, fast-moving, and long studied red dwarf -- has a super-Earth sized planet orbiting just beyond its habitable zone. The discovery relied on data collected over many years using the tried-and-true radial velocity method, which searches for wobbles in the movement of the host star. …
Probing The Insides of Mars to Learn How Rocky Planets Are Formed
In the known history of our 4.5-billion-year-old solar system, the insides of but one planet have been explored and studied. While there's a lot left to know about the crust, the mantle and the core of the Earth, there is a large and vibrant field dedicated to that learning. Sometime next month, an extensive survey …
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The Kepler Space Telescope Mission Is Ending But Its Legacy Will Keep Growing.
The Kepler Space Telescope is dead. Long live the Kepler. NASA officials announced on Tuesday that the pioneering exoplanet survey telescope -- which had led to the identification of almost 2,700 exoplanets -- had finally reached its end, having essentially run out of fuel. This is after nine years of observing, after a malfunctioning …
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Technosignatures and the Search for Extraterrestrial Intelligence
The word "SETI" pretty much brings to mind the search for radio signals come from distant planets, the movie "Contact," Jill Tarter, Frank Drake and perhaps the SETI Institute, where the effort lives and breathes. But there was a time when SETI -- the Search for Extraterrestrial Intelligence -- was a significantly broader concept, that …
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Human Space Travel, Health and Risk
We all know that human space travel is risky. Always has been and always will be. Imagine, for a second, that you're an astronaut about to be sent on a journey to Mars and back, and you're in a capsule on top of NASA's second-generation Space Launch System designed for that task. You will …
Time-Traveling in the Australian Outback in Search of Early Earth
This story was written by Nicholas Siegler, Chief Technologist for NASA’s Exoplanet Exploration Program at the Jet Propulsion Laboratory with the help of doctoral student Markus Gogouvitis, at the University of New South Wales, Australia and Georg-August-University in Gottingen, Germany. This past July I joined a group of geologists, geochemists, microbiologists, and fellow …
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Water Worlds, Aquaplanets and Habitability
The more exoplanet scientists learn about the billions and billions of celestial bodies out there, the more the question of unusual planets -- those with characteristics quite different from those in our solar system -- has come into play. Hot Jupiters, super-Earths, planets orbiting much smaller red dwarf stars -- they are all grist …
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Curiosity Rover Looks Around Full Circle And Sees A Once Habitable World Through The Dust
https://youtu.be/lcJLZfPiyfc An annotated 360-degree view from the Curiosity mast camera. Dust remaining from an enormous recent storm can be seen on the platform and in the sky. And holes in the tires speak of the rough terrain Curiosity has traveled, but now avoids whenever possible. Make the screen bigger for best results and enjoy the …
A National Strategy for Finding and Understanding Exoplanets (and Possibly Extraterrestrial Life)
An extensive, congressionally-directed study of what NASA needs to effectively learn how exoplanets form and whether some may support life was released today, and it calls for major investments in next-generation space and ground telescopes. It also calls for the adoption of an increasingly multidisciplinary approach for addressing the innumerable questions that remain unanswered. …
15,000 Galaxies in One Image
Here's an image to fire your imagination: Fifteen thousand galaxies in one picture -- sources of light detectable today that were generated as much as 11 billion years ago. Of those 15,000 galaxies, some 12,000 are inferred to be in the process of forming stars. That's hardly surprising because the period around 11 billions years …
Many Worlds 