Search results for Planet Nine

Environment Oct 21, 2022

Wildfire smoke may warm the Earth for longer than we thought

Wildfires are a major source of air pollution. They are also predicted to worsen as climate change progresses.

Earth Sciences Oct 19, 2022

Nitrogen boundaries exceeded in many world regions

It has long been known that humanity is exceeding planetary boundaries for nitrogen use. Scientists have now mapped those exceedances regionally for the first time. Whereas countries in north-western Europe and parts of India ...

Space Exploration Oct 19, 2022

Algae could be instrumental in making human exploration of Mars possible

While the world is marveling over the first images and data now coming from NASA's Perseverance rover mission seeking signs of ancient microscopic life on Mars, a team of UNLV scientists is already hard at work on the next ...

Environment Oct 17, 2022

Permafrost emissions must be factored into global climate targets, says study

By the end of this century, permafrost in the rapidly warming Arctic will likely emit as much carbon dioxide and methane into the atmosphere as a large industrial nation, and over time potentially more than the United States ...

Environment Oct 8, 2022

Climate tipping points could lock in unstoppable changes to the planet. How close are they?

Continued greenhouse gas emissions risk triggering climate tipping points. These are self-sustaining shifts in the climate system that would lock-in devastating changes, like sea-level rise, even if all emissions ended.

Earth Sciences Sep 28, 2022

As glaciers melt at an alarming pace, a geologist reflects on the legacy of ice ages and what the future may hold

With continued news of glaciers in Greenland, Antarctica, Alaska and the Alps, as well as other parts of the world, melting far faster than predicted, Tufts Now turned to an expert on ice sheets and the last ice age to better ...

Space Exploration Sep 21, 2022

Mars is littered with 15,694 pounds of human trash from 50 years of robotic exploration

People have been exploring the surface of Mars for over 50 years. According to the United Nations Office for Outer Space Affairs, nations have sent 18 human-made objects to Mars over 14 separate missions. Many of these missions ...

Planetary Sciences Sep 12, 2022

What is the smallest planet? (It's not Pluto.) Taking a closer look at planet sizes.

As elementary schoolers, we learned the order of the planets. Maybe your teacher even had a snappy mnemonic like "My Very Educated Mother Just Served Us Nine Pizzas" or "My Very Educated Mother Just Served Us Nachos" after ...

Planetary Sciences Aug 25, 2022

Perseverance rover retrieves key rocky clues to Mars' geologic and water history

In its first year exploring Jezero Crater on Mars, the Perseverance rover collected rock samples that scientists anticipate will provide a long-awaited timeline for the planet's geologic and water history.

Astronomy Aug 17, 2022

NASA scientists study how to remove planetary 'photobombers'

Imagine you go to a theme park with your family and you ask a park employee to take a group photo. A celebrity walks by in the background and waves at the camera, stealing the focus of the photo. Surprisingly, this concept ...

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