Two small asteroids safely pass Earth this week

Two small asteroids recently discovered by astronomers at the NASA-funded Catalina Sky Survey (CSS) near Tucson, Arizona, are safely passing by Earth within one lunar distance this week.

Humans get in the way of mammal movement

Humans modify natural landscapes in a variety of ways, from constructing expansive cityscapes to fencing off otherwise untouched rangeland. A new study, co-authored by biologists at the University of Maryland, describes the ...

Storming the castle: New discovery in the fight against bacteria

Bacteria must sense and respond to changes in their environment to survive, and their exterior membranes are their first line of defense. Exciting new research reveals a previously unappreciated aspect of this defense, which ...

VLBA measurement promises complete picture of Milky Way

Astronomers using the National Science Foundation's Very Long Baseline Array (VLBA) have directly measured the distance to a star-forming region on the opposite side of our Milky Way Galaxy from the Sun. Their achievement ...

Close approach of asteroid 2012 TC4 poses no danger to Earth

The house-sized asteroid 2012 TC4 is slated to give Earth a close shave on Thursday, October 12, swooshing by our planet at approximately 5:41 UTC (1:41 a.m. EDT) at a distance of about 31,000 miles (50,000 kilometers). Although ...

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