Dark Energy and New Worlds: NASA’s WFIRST Mission

Our everyday experience with gravity is that of an attractive force: it pulls things closer. But we’ve discovered a very peculiar property about our expanding universe: the expansion is accelerating, as if some repulsive force is pushing it apart. Why and how does this unknown ‘dark energy’ push the cosmos? This strange, fundamental question is one that NASA’s WFIRST telescope is designed to address. That same technology will also allow us to learn more about exoplanets in new ways, and will provide us with images that are ~100x larger in area than Hubble and Webb. The WFIRST mission will set the stage to usher in a new era of understanding about our universe.

Speaker: Amber Straughn, NASA Goddard Space Flight Center
Host: Dr. Frank Summers

Recorded live on June 27, 2017 at the Space Telescope Science Institute in Baltimore, MD, USA

For more information: http://hubblesite.org/about_us/public_talks/

Vaccines: Last Week Tonight with John Oliver (HBO)

The benefits of vaccines far outweigh the minuscule risks, but some parents still question their safety. John Oliver discusses why some people may still feel uncertainty about childhood vaccinations.

Connect with Last Week Tonight online…

Subscribe to the Last Week Tonight YouTube channel for more almost news as it almost happens: www.youtube.com/user/LastWeekTonight

Find Last Week Tonight on Facebook like your mom would: http://Facebook.com/LastWeekTonight

Follow us on Twitter for news about jokes and jokes about news: http://Twitter.com/LastWeekTonight

Visit our official site for all that other stuff at once: http://www.hbo.com/lastweektonight