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How much does Earth weigh?
By Katherine Irving published
Earth's mass took hundreds of years to estimate, and even now, experts don't agree on the exact number.
Earth hit by radiation from rare 'double' X-class solar flare, triggering most powerful geomagnetic storm in 6 years
By Harry Baker published
A recent X-class flare, which was split into two simultaneous explosions, launched a coronal mass ejection that smashed into Earth, triggering the most powerful disruption to our planet's magnetic field for more than six years.
Spring equinox 2024: 'Equal night' brings the first full day of spring to the Northern Hemisphere
By Brandon Specktor last updated
The Spring equinox (March 19, 2024) signals the start of spring in the Northern Hemisphere, the beginning of autumn in the Southern Hemisphere, and a rare moment of "equal night" across the world.
Have all 8 planets ever aligned?
By Charles Q. Choi published
The solar system's eight planets will never truly be in a straight line, but they can get close to it.
Every 2.4 million years, Mars tugs on Earth so hard it changes the ocean floor
By Emily Cooke published
A new geological study suggests that Mars' gravitational field pulls the Earth closer to the sun over cycles lasting millions of years, warming our climate.
Widespread solar storm struck spacecraft near the sun, Earth and Mars in quick succession
By Meredith Garofalo published
In 2021, a solar storm was recorded by multiple different spacecraft and the results tell quite the story.
Passing stars may have changed Earth's orbit and climate, study finds
By Abha Jain published
Passing stars may have altered Earth's orbit, and its climate, many times throughout cosmic history. New research digs into what that means when it comes to understanding our planet's past.
Could mini space-grown organs be our 'cancer moonshot'?
By Emily Cooke published
Scientists say they're growing "organoids" in space to better understand cancer, neurological diseases and aging, and to hopefully uncover treatments.
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