Earth's magnetic field became weaker during ... interacts with gases in the planet's magnetic field. Unable to view our graphics? Click here to see them. The European Space Agency launched ...

The sun's solar weather has caused several atmospheric events since the star entered its maximum phase. See the sun's effect.

Earth Day is April 22. The 43-year-old tradition, started in the spring of 1970, signaled the rise of the modern environmental movement. Around 20 million people across the United States took to ...

Earth is our planet and we made it what it is today. Man has explored, unearthed and brought to life many secrets about this great planet. We know a lot of about it and much is yet to be uncovered.