From a distance, it looks like a serene blue twin of our own world, a dot that could almost pass for Earth in a telescope ...

The very air we breathe, composed of approximately 21% oxygen, is the lifeblood of our planet. It sustains everything from microscopic organisms to towering redwoods and, of course, humanity. But what ...

Astronomy magazine tends to focus on space observatories that peer beyond Earth, into the depths of space. But the vast majority of observational satellites around our blue world stare right back at ...

Mike Brown is convinced that beyond Neptune, at the far reaches of our solar system, there's an unseen giant planet. "This is the 5th largest planet in our solar system, lurking out there, waiting to ...

Earth Hour 2025 returns by providing 60 minutes of global unity around the world, in support and celebration of our planet. Earth Hour serves as a beacon of positivity, hope, and inspiration to rally ...