This dazzling short film references the Rosetta mission of the European Space Agency, which intends unlock the mysteries of the comets and, in doing so, the origins of our Solar System.

Enjoy this excerpt of Led Zeppelin performing "Stairway to Heaven" at Earls Court. Written by guitarist Jimmy Page and vocalist Robert Plant, the song is widely acknowledged as one of the greatest rock songs of all time.

Katie performs "I Will Be There" - the first single from her new album Ketevan.

Justin Bieber headlined the 2015 Jingle Bell Ball in London, finishing his set with the song "Sorry."

When we look at insults used in Shakespeare's play "Romeo and Juliet," we get a new insight into dynamics between the characters and how they relate to the development of the story.

"Sunday Bloody Sunday" is a song by the Irish rock band U2 that was written as a response to events related to conflict in Northern Ireland at the time. It is considered one of their signature songs, and is one of the band's most performed tracks.

This video takes a look at hydrothermal vents and the novel life forms that thrive there in the absence of sunlight, fueled by underwater volcanoes. One of these harsh environments is the Axial Seamount off the West Coast of the United States.

When Penny returns from visiting her family in Nebraska, Leonard is happy to see her. Sheldon, however, is much less welcoming when he learns that her family has the flu.

The First Lady welcomes the first act in an evening of poetry, music and spoken word at the White House. Pianist ELEW and bassist/singer Esperanza Spalding kick off the evening with an instrumental jazz fusion performance. Enjoy!

Taylor Swift's incredible performance of her track "I Knew You Were Trouble" at Capital FM's Jingle Bell Ball!

Lifestyle video blogger Aspyn Ovard demonstrates how she packed her suitcase efficiently for a recent trip to the Bahamas.

Here is Australian rock band INXS's single "Freedom Deep" from their 1993 album Full Moon, Dirty Hearts. Enjoy!

Canadian sensation Shawn Mendes made his debut at age 16 with the album "Handwritten." Here he performs the hit single "Stitches" in a duet with US singer and actress Hailee Steinfeld.

Sigrid begins her tale of how she ended up in Italy, where she's now living. She was born in Minneapolis and raised in New York. As a young adult, she relocated to Switzerland in order to study early music. In this video, she talks about traveling to Europe for the first time and learning about the different genres of music prior to the classical era.

The President and First Lady kick off an evening of poetry, music, and the spoken word at the White House.