A Flawed, Strange Covid-19 Origin Theory Is Gaining Traction

A Flawed, Strange Covid-19 Origin Theory Is Gaining Traction

That means not only that the virus was in the lab, but that it was amplified to make more of it so it could be used as a control to develop the test, says Michael Worobey, an evolutionary biologist at the University of Arizona.

Space Photos of the Week: Postcards From a Martian Winter

Space Photos of the Week: Postcards From a Martian Winter

Photograph: NASA/JPL-Caltech/University of ArizonaThe scale of this photo makes it’s hard to tell how massive these sand dunes are.Photograph: NASA/JPL-Caltech/University of ArizonaThis image looks like something seen through a microscope, but no, this is a large swath of Martian terrain.

No One Knows Why Rocks Are Exploding From Asteroid Bennu

No One Knows Why Rocks Are Exploding From Asteroid Bennu

“No one has ever seen an active asteroid up close like this,” says Carl Hergenrother, an astronomer at the University of Arizona and the scientist who proposed Bennu as the target for OSIRIS-REx.