View personal and professional recollections of the Space Shuttle Challenger Disaster by CBS news correspondents who covered it - includes rarely seen footage.

Portrait of the teacher who died in the tragic explosion of the space shuttle Challenger in 1986. Includes interviews with her parents and students.

One of the most tragic and shocking images ever broadcast to the American people, the Space Shuttle Challenger explosion left our country in mourning. the loss of seven astronauts became more heartbreaking as we learned that the incident could have been avoided if protocols had been different. Hear the emotional recollections of the Challenger commander's wife, two astronauts who were involved in the launch preparation, an engineer for the rocket boosters that failed, and a reporter who thought this would be a routine workday, as they relive the controversial moments that lead to the most notorious day in NASA's history.

Take a high performance ride through the formation of the third planet from the Sun, Earth. A survivor of one of the most violent "neighborhoods" in the universe, learn how earth was created and discover what creatures hold clues to how life began.

It has been fifty years since man first ventured into space, but the greatest secrets are yet to be revealed. Mars is the planet in our solar system most similar to Earth despite otherworldly features such as the largest volcano in the Solar System. Rumors of life on Mars may be substantiated as NASA orbiters and rovers discover new evidence of frozen water just beneath the rusty soil. Did alien life exist there? As Earth reels with the effects of global warming, Mars becomes the most likely candidate for eventual human habitation. Cutting-edge computer graphics are used to show what life would be like on Mars, and to imagine what kind of life forms might evolve in alien atmospheres.

Jupiter poses many questions about our solar system. It is a powerful planet of gas whose flowing colors and spots are beautiful, but contain violent storms and jet streams. A mini solar system of over sixty moons rotate around Jupiter--a half billion miles from earth. Could one of these moons contain life under its icy crust?

Are the rings of Saturn a real celestial phenomenon or merely a cosmic Illusion? Technology allows the experts to get closer to the furthest planet visible to the naked eye. Old questions are answered and new ones arise.

New discoveries regarding the Outer Planets are creating a fundamental rethinking of our solar system. Uranus is a toxic combination of hydrogen, helium, and methane.

View personal and professional recollections of the Space Shuttle Challenger Disaster by CBS news correspondents who covered it - includes rarely seen footage.

Portrait of the teacher who died in the tragic explosion of the space shuttle Challenger in 1986. Includes interviews with her parents and students.

One of the most tragic and shocking images ever broadcast to the American people, the Space Shuttle Challenger explosion left our country in mourning. the loss of seven astronauts became more heartbreaking as we learned that the incident could have been avoided if protocols had been different. Hear the emotional recollections of the Challenger commander's wife, two astronauts who were involved in the launch preparation, an engineer for the rocket boosters that failed, and a reporter who thought this would be a routine workday, as they relive the controversial moments that lead to the most notorious day in NASA's history.

Take a high performance ride through the formation of the third planet from the Sun, Earth. A survivor of one of the most violent "neighborhoods" in the universe, learn how earth was created and discover what creatures hold clues to how life began.

It has been fifty years since man first ventured into space, but the greatest secrets are yet to be revealed. Mars is the planet in our solar system most similar to Earth despite otherworldly features such as the largest volcano in the Solar System. Rumors of life on Mars may be substantiated as NASA orbiters and rovers discover new evidence of frozen water just beneath the rusty soil. Did alien life exist there? As Earth reels with the effects of global warming, Mars becomes the most likely candidate for eventual human habitation. Cutting-edge computer graphics are used to show what life would be like on Mars, and to imagine what kind of life forms might evolve in alien atmospheres.

Jupiter poses many questions about our solar system. It is a powerful planet of gas whose flowing colors and spots are beautiful, but contain violent storms and jet streams. A mini solar system of over sixty moons rotate around Jupiter--a half billion miles from earth. Could one of these moons contain life under its icy crust?

Are the rings of Saturn a real celestial phenomenon or merely a cosmic Illusion? Technology allows the experts to get closer to the furthest planet visible to the naked eye. Old questions are answered and new ones arise.

New discoveries regarding the Outer Planets are creating a fundamental rethinking of our solar system. Uranus is a toxic combination of hydrogen, helium, and methane.

View personal and professional recollections of the Space Shuttle Challenger Disaster by CBS news correspondents who covered it - includes rarely seen footage.

Portrait of the teacher who died in the tragic explosion of the space shuttle Challenger in 1986. Includes interviews with her parents and students.

One of the most tragic and shocking images ever broadcast to the American people, the Space Shuttle Challenger explosion left our country in mourning. the loss of seven astronauts became more heartbreaking as we learned that the incident could have been avoided if protocols had been different. Hear the emotional recollections of the Challenger commander's wife, two astronauts who were involved in the launch preparation, an engineer for the rocket boosters that failed, and a reporter who thought this would be a routine workday, as they relive the controversial moments that lead to the most notorious day in NASA's history.

Take a high performance ride through the formation of the third planet from the Sun, Earth. A survivor of one of the most violent "neighborhoods" in the universe, learn how earth was created and discover what creatures hold clues to how life began.

It has been fifty years since man first ventured into space, but the greatest secrets are yet to be revealed. Mars is the planet in our solar system most similar to Earth despite otherworldly features such as the largest volcano in the Solar System. Rumors of life on Mars may be substantiated as NASA orbiters and rovers discover new evidence of frozen water just beneath the rusty soil. Did alien life exist there? As Earth reels with the effects of global warming, Mars becomes the most likely candidate for eventual human habitation. Cutting-edge computer graphics are used to show what life would be like on Mars, and to imagine what kind of life forms might evolve in alien atmospheres.

Jupiter poses many questions about our solar system. It is a powerful planet of gas whose flowing colors and spots are beautiful, but contain violent storms and jet streams. A mini solar system of over sixty moons rotate around Jupiter--a half billion miles from earth. Could one of these moons contain life under its icy crust?

Are the rings of Saturn a real celestial phenomenon or merely a cosmic Illusion? Technology allows the experts to get closer to the furthest planet visible to the naked eye. Old questions are answered and new ones arise.

New discoveries regarding the Outer Planets are creating a fundamental rethinking of our solar system. Uranus is a toxic combination of hydrogen, helium, and methane.