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ask2009-001

08.26.09

Where Is the Center of the Universe?

Dr. Varoujan Gorjian explains the mind-boggling expansion of the Universe. watch now

ask_what01

02.05.09

W-5 Star-Forming Region

Visit the W-5 star-forming region with 'Ask an Astronomer'! watch now

ask2008-007

12.22.08

Why Is the Sky Blue?

In this 'Ask an Astronomer' episode, Dr. Carolyn Brinkworth fills us in on what the color of the sky has to do with f... watch now

ask2008-006

10.23.08

What's Between the Stars?

In this 'Ask an Astronomer' episode, Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum. watch now

hue-004

09.10.08

Galeria: Cúmulo del Copo de Nieve

Un grupo de estrellas bebés forma un "copo de nieve" estelar, en estas observaciones de Spitzer de la región cercana ... watch now

ask_5th

08.25.08

Spitzer's Fifth Anniversary

This 'Ask an Astronomer' special looks at some of the biggest discoveries from NASA's Spitzer Space Telescope over th... watch now

ask2008-005

07.01.08

What Will Happen to the Earth When the Sun Dies?

Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet in this 'Ask an Ast... watch now

ask2008-004

05.08.08

Can a Planet Have Two Suns?

Dr. Carolyn Brinkworth addresses a famous science fiction scenario in this 'Ask an Astronomer' video. watch now

ask2008-003

04.10.08

Can a Galaxy Die?

Dr. Varoujan Gorjian gives us the answer to this 'Ask an Astronomer' question. watch now

ask2008-002

03.13.08

Why Aren't There Any Green Stars?

Dr. Michelle Thaller answers this question for 'Ask an Astronomer.' watch now

ask2008-001

02.13.08

How Do You Discover an Asteroid?

Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks. watch now

ask_ir

12.18.07

Infrared: More Than Your Eyes Can See

Dr. Michelle Thaller explains infrared light in this older video, produced by NASA's Spitzer Space Telescope (then kn... watch now

ask_m51

11.05.07

M51 and Gizmo

In this animated 'Ask an Astronomer' special, innocent alien M51 moves the Earth into a closer orbit around the sun, ... watch now

hue-003

11.01.07

Galeria: Helix

La extraña nebulosa Helix, creada de las capas exteriores de una estrella moribunda que alguna vez fue como nuestro s... watch now

hue-002

09.27.07

Galeria: Eta Carinae

La bella nebulosa de Carina, que se extiende 200 años luz a través del espacio, está siendo destrozada por la radiaci... watch now

hue-001

09.26.07

Galeria: La gran nube de Magallanes

La gran nube de Magallanes, una galaxia enana que orbita la Vía Láctea, es revelada con exquisito detalle en este vid... watch now

ask2007-002

09.14.07

What Happens When Galaxies Collide?

Dr. Varoujan Gorjian takes us inside galactic collisions in this 'Ask an Astronomer' video. watch now

ask2007-001

07.27.07

What Is the Nearest Galaxy to the Milky Way?

Dr. Michelle Thaller explains that the answer isn't as simple as you might think! watch now

ask2006-003

02.12.07

Why Isn't Pluto a Planet Anymore?

Dr. Robert Hurt explains why Pluto got... well... plutoed. watch now

ask2006-002

08.24.06

How Can We See a Black Hole?

If no light escapes from a black hole, how can we detect them? 'Ask an Astronomer' explains. watch now

   

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