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'Planetary defense is knowing what's out there and what could do harm to us.' Meet the scientist who helped build NASA's asteroid response planLindley Johnson has been a pioneer in blueprinting warning and response scenarios to any potential impact of Earth by an ...
Three Tucson scientists are featured in "Planetary Defenders," a new NASA documentary that premieres Wednesday about the effort to track and possibly deflect asteroids endangering Earth.
A new study modeled the chemistry of TOI-270 d, an exoplanet between Earth and Neptune in size, finding evidence that it could be a giant rocky planet shrouded in a thick, hot atmosphere. TOI-270 d is ...
In our solar system Earth and Mars are in the box, Venus and Mercury outside. The cold gas giants are literally off the chart. The logarithmic scale used initially here allows for an easier ...
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