Earth

How Far Away Could We Detect… Ourselves?

Revelations from the past can seem quaint once we've been living with them for a generation or two. That's true…

2 days ago

Japanese Lander Looks Back at Earth as it Heads to the Moon

The Hakuto-R 2 mission launched on January 15, 2025. It's the successor to Hakuto-R, which launched in December 2022 but…

6 days ago

It's Time for Sustainable Development Goal for Space

In 2015, the United Nations adopted the 2030 Agenda for Sustainable Development—the Sustainable Development Goals (SDGs)—a universal call to action…

4 weeks ago

Early Earth's Oceans of Magma Accelerated the Moon's Departure

When the Earth was struck by a Mars-sized planet in its early history, it ejected a debris cloud that led…

2 months ago

Advanced Civilizations Could be Indistinguishable from Nature

Sometimes in science you have to step back and take another look at underlying assumptions. Sometimes its necessary when progress…

2 months ago

Antarctica Has Gotten 10 Times Greener in 35 Years

Our satellites are dispassionate observers of Earth's climate change. From their vantage point they watch as pack ice slowly loses…

2 months ago

The Early Earth Wasn’t Completely Terrible

Earth formed 4.54 billion years ago. The first period of the history of the Earth was known as the Hadean…

2 months ago

Earth’s Old Trees Keep A Record of Powerful Solar Storms

Most of the time the Sun is pretty well-mannered, but occasionally it's downright unruly. It sometimes throws extremely energetic tantrums.…

3 months ago

Lessons From Ancient Earth’s Atmosphere: From Hostile to Hospitable

Will we ever understand how life got started on Earth? We've learned much about Earth's long, multi-billion-year history, but a…

3 months ago

An Otherworldly Cloud Over New Zealand

Filmmakers love New Zealand. Its landscapes evoke other worlds, which explains why so much of The Lord of the Rings…

3 months ago