Science and Innovation

Melissa Sevigny

The Navajo Nation is arid and vast—nearly thirty thousand square miles. Hydrologists struggle to collect much-needed measurements of rainfall there. But now they have help from NASA satellites.


Courtesy

The spring equinox is one of two days a year when the equator lines up with the center of the sun, creating a balance of day and night. Historically – for many indigenous people of the world – this celestial event marks a time for renewal, emergence of life and planting of crops. 


Molly Baker

A decade ago Flagstaff suffered a blow when Pluto was “demoted” to a dwarf planet. It was discovered at Lowell Observatory in Flagstaff in 1930 and is a source of pride for the city. But astronomers voted on the definition of a planet and Pluto didn’t make the cut. Now, planetary scientists say that definition is both overly complicated and incomplete.  They’ve suggested a different one. Melissa Sevigny from the Arizona Science Desk spoke with two Lowell scientists about the definition, Will Grundy and Gerard van Belle.   


Caltech/R.Hunt(IPAC)

The public can now join the hunt for the elusive Planet Nine, a massive planet astronomers believe might be hidden beyond Neptune.

NASA

Six months from today a total solar eclipse will cross the nation from coast to coast. The last time that happened was nearly a century ago. From the Arizona Science Desk, Melissa Sevigny reports on how Arizona astronomers are gearing up for the “Great American Eclipse.”


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