The Largest Black Holes in the Universe: A Visual Introduction

They’re not your ordi­nary black holes. They’re big­ger. They’re bad­der. They are super­mas­sive black holes capa­ble of pro­duc­ing the largest erup­tions since the Big Bang. But, despite their mas­sive size, we’re just start­ing to under­stand these forces oper­at­ing in the cen­ter of galax­ies some­times bil­lions of light years from Earth.

The doc­u­men­tary above (run­ning about 18 min­utes) offers a rea­son­ably good primer on super­mas­sive black holes. Or, to get anoth­er angle on things, you can turn to Fron­tiers and Con­tro­ver­sies in Astro­physics, a course taught by Charles Bai­lyn at Yale. Lec­ture 15 (watch here) is specif­i­cal­ly ded­i­cat­ed to these moth­er-of-all black holes.

The full course is avail­able in these for­mats (YouTube — iTunes Audio — iTunes Video — Down­load Course) and oth­er­wise list­ed in our big col­lec­tion of Free Online Cours­es.

by | Permalink | Make a Comment ( 2 ) |

The Moon Up Close, in HD

For the past two years, NASA’s Lunar Recon­nais­sance Orbiter (LRO) has been orbit­ing the Moon, gath­er­ing data that will help astro­nauts pre­pare for long-dura­tion expe­di­tions to the lunar sur­face, and even­tu­al­ly push fur­ther into the “infi­nite fron­tier of space.” (Read more about the big pic­ture plan here.)

As part of this mis­sion, the LRO has trav­eled approx­i­mate­ly 50 kilo­me­ters (31 miles) above the Moon, cre­at­ing a 3‑D map of the lunar sur­face. And now we’re receiv­ing images that show us the Moon in unprece­dent­ed detail and focus. The val­leys. The craters. The des­o­late sur­face. They’re all there, as nev­er seen before, in HD.

This strik­ing clip oth­er­wise appears in our col­lec­tion of 125 Great Sci­ence Videos.

Relat­ed Con­tent:

Tour­ing the Earth from Space (in HD)

The Best of NASA Space Shut­tle Videos (1981–2010)

by | Permalink | Make a Comment ( 2 ) |

William Shatner Narrates Space Shuttle Documentary

After 30 years and 134 flights, Amer­i­ca’s space shut­tle pro­gram draws to a close. And it feels pitch per­fect to wind things down with a doc­u­men­tary nar­rat­ed by William Shat­ner. Of course, you know him as Cap­tain Kirk from Star Trek, the icon­ic sci-fi TV show that ran from 1966 to 1969, smack in the mid­dle of NASA’s hey­day. (Note: Star Trek has just been added to Net­flix’s stream­ing cat­a­logue.)

The 80 minute doc­u­men­tary takes you through the his­to­ry of the Space Shut­tle pro­gram, which first got under­way dur­ing the Nixon admin­is­tra­tion. The film spends ample time look­ing at the design chal­lenges NASA engi­neers faced in try­ing to cre­ate a reusable shut­tle, while also show­ing ear­ly pro­to­types. Once the design phase was com­plete, con­struc­tion began on the first orbiter in June, 1974 and wrapped up two years lat­er. NASA called its first craft Space Shut­tle Enter­prise, pay­ing homage to the fic­tion­al Star­ship Enter­prise. Next, it was time to bold­ly go where no one had gone before.

The doc is now added to our col­lec­tion of Free Movies Online.

Relat­ed Con­tent:

The Best of NASA Space Shut­tle Videos (1981–2010)

Endeavour’s Launch Viewed from Boost­er Cam­eras

by | Permalink | Make a Comment ( 6 ) |

A Year of the Moon in 2.5 Minutes

If you were stuck some­where far away from yes­ter­day’s lunar eclipse, here’s some con­so­la­tion cour­tesy of NASA. The Sci­en­tif­ic Visu­al­iza­tion Stu­dio at the God­dard Space Flight Cen­ter has com­piled this two and a half minute video from over a year’s worth of data record­ed by the Lunar Recon­nais­sance Orbiter (LRO), which has been orbit­ing the moon at 50 kilo­me­ters above its sur­face for over a year.

The results are pret­ty spec­tac­u­lar, and might ren­der the pain of miss­ing a chance to watch the moon turn red a lit­tle more bear­able, espe­cial­ly for all you heart­bro­ken Can­cers (we’ll get through this.)

via Wired News

Relat­ed Con­tent:

Tour­ing the Earth from Space (in HD)

The Best of NASA Space Shut­tle Videos (1981–2010)

Sheer­ly Avni is a San Fran­cis­co-based arts and cul­ture writer. Her work has appeared in Salon, LA Week­ly, Moth­er Jones, and many oth­er pub­li­ca­tions. You can fol­low her on twit­ter at @sheerly.

A Tour of Earth from Outer Space (in HD).

A new way to see the world. Give NASA sev­en min­utes, and they’ll show you the Earth­’s most impres­sive land­scapes — as seen from space, in HD. The coasts of Namib­ia, Tunisia and Mada­gas­car, they’re all on the itin­er­ary, along with Sici­ly, Chi­na, Iran, and Utah. Plus you will see a giant hur­ri­cane over the Atlantic ocean. Not to be missed.

Relat­ed Con­tent:

Endeavour’s Launch Viewed from Boost­er Cam­eras

NASA Cap­tures Giant Solar Storm

The Best of NASA Space Shut­tle Videos (1981–2010)

by | Permalink | Make a Comment ( 1 ) |

Cassini Solstice Mission: Saturn’s Moons Meet Nine Inch Nails

If you haven’t been fol­low­ing the Cassi­ni space­craft’s sec­ond mis­sion to Sat­urn, here’s a video that will hook you in. It fea­tures incred­i­ble black-and-white images of Sat­urn and its moons, all cap­tured by Cassini’s “cam­era” — also known as the Cassi­ni-Huy­gens Imag­ing Sci­ence Sub­sys­tem — and designer/director Chris Abbas, who edit­ed togeth­er footage from Cassini’s archive and set it to a great Nine Inch Nails sound­track.

Accord­ing to NASA, the Cassi­ni will con­tin­ue orbit­ing Sat­urn until May 2017. It has already dis­cov­ered some amaz­ing things about Sat­urn’s largest moon, Titan, includ­ing the pos­si­bil­i­ty that Titan’s cur­rent state, com­plete with its lakes, rivers, rain, snow, clouds, moun­tains and even vol­ca­noes, may tell us some­thing about what earth was like before life evolved. But Abbas’s short film would be beau­ti­ful to watch even with­out any knowl­edge of the sci­ence behind it.

via @kirstinbutler

Relat­ed Con­tent:

NASA:  The Fron­tier is Every­where

NASA Cap­tures Giant Solar Storm

The Best of NASA Space Shut­tle Videos (1981–2010)

NASA Lauch­es Pho­to Archive on Flickr

Sheer­ly Avni is a San Fran­cis­co-based arts and cul­ture writer. Her work has appeared in Salon, LA Week­ly, Moth­er Jones, and many oth­er pub­li­ca­tions. You can fol­low her on twit­ter at @sheerly.

3D Map of Universe Captures 43,000 Galaxies

The 2MASS Red­shift Sur­vey (details here) took 10 years to com­plete, and it has now yield­ed the finest 3D map of the uni­verse ever made, cat­a­logu­ing more than 43,000 galax­ies with­in 380 mil­lion light-years from Earth. The new map was pre­sent­ed last week at the 218th meet­ing of the Amer­i­can Astro­nom­i­cal Soci­ety. You can view the map in a much big­ger for­mat here and, as one user sug­gests, you may want to “right click and save as desk­top back­ground.”

Space.com has more details on this incred­i­ble map­ping project. Thanks Robin for send­ing along.

Don’t miss us on Face­book and Twit­ter.

by | Permalink | Make a Comment ( 6 ) |

Endeavour’s Launch Viewed from Booster Cameras

Here’s the good stuff that nerdgasms are made of. NASA has released a video that lets you hitch a ride on the May 16th launch of the Space Shut­tle Endeav­our. The video runs 37 min­utes; it’s nar­rat­ed by a NASA offi­cial; and it loops around and lets you see the launch from sev­er­al dif­fer­ent van­tage points.

You start with liftoff, trav­el­ing at 1300 miles per hour. Then, about two min­utes lat­er, the rock­et boost­ers sep­a­rate from the shut­tle, and you then twist with them. The sec­ond loop starts around the 7:20 mark, and don’t miss the splen­did view at 9:40 …

Relat­ed Con­tent:

The Best of NASA Space Shut­tle Videos (1981–2010)

NASA Cap­tures Giant Solar Storm

NASA Zooms into Spi­ral Galaxy

by | Permalink | Make a Comment ( 3 ) |

« Go BackMore in this category... »
Quantcast
Open Culture was founded by Dan Colman.