It's hard for scientists to study "dark matter" — they can really only learn about it by studying its effects on the things we can see. Gary Prézeau, an astrophysicist with NASA's Jet Propulsion Laboratory, has published a study which explains how streams of dark matter pass through the Earth and form extremely dense filaments, or "hairs." The "roots" of these hairs would originate not in Earth itself but about twice as far away as the moon and — well, don't take our word for it. Listen above to Dave Schlom's conversation with Gary Prézeau.
Blue Dot, named after Carl Sagan's famous speech about our place in the universe, features interviews with guests from all over the regional, national and worldwide scientific communities. Host Dave Schlom leads discussions about the issues science is helping us address with experts who shed light on climate change, space exploration, astronomy, technology and much more. Dave asks us to remember: from deep space, we all live on a pale, blue dot. Blue Dot is engineered, co-produced and co-hosted by Matt Shilts. It airs Thursdays at 10:30 a.m. and Fridays at 6:30 p.m.
Dark Matter, Affected By Earth's Gravity, Forms Super-Dense 'Hairs'
NASA-JPL
