Search results for solar cycle 25

Earth Sciences Apr 11, 2024

The heat is on: What we know about why ocean temperatures keep smashing records

Over the last year, our oceans have been hotter than any time ever recorded. Our instrumental record covers the last 150 years. But based on proxy observations, we can say our oceans are now hotter than well before the rise ...

Astronomy Apr 10, 2024

HD 21997 is a high-frequency Delta Scuti pulsator, observations find

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have observed a young star designated HD 21997. Results of the new observations indicate that the studied object is a high-frequency Delta Scuti pulsator. ...

Astronomy Mar 25, 2024

'The ghost has taken the spirit of the moon': how Torres Strait Islanders predict eclipses

It's eclipse season. The sun, Earth and moon are aligned so it's possible for the Earth and moon to cast each other into shadow.

Astronomy Mar 11, 2024

Maximum mass of non-rotating neutron star precisely inferred to be 2.25 solar masses

A study led by Prof. Fan Yizhong from the Purple Mountain Observatory of the Chinese Academy of Sciences has achieved significant precision in determining the upper mass limit for non-rotating neutron stars, a pivotal aspect ...

Planetary Sciences Feb 25, 2024

Have a look at the whos, whats and whens of leap year through time

Leap year. It's a delight for the calendar and math nerds among us. So how did it all begin and why?

Astronomy Feb 21, 2024

Why do we need leap years? Astrophysicists explain this month's extra date

This year is a leap year. Many people will know this means that February gets an extra day—a total of 29, as opposed to 28—but often do not know why. Space experts Dr. Minjae Kim and Dr. James McCormac shed light on the ...

Planetary Sciences Jan 30, 2024

How the 2024 total solar eclipse is different than the 2017 eclipse

On April 8, the moon's shadow will sweep across the United States, as millions will view a total solar eclipse. For many, preparing for this event brings memories of the magnificent total solar eclipse on Aug. 21, 2017.

Earth Sciences Jan 15, 2024

Four factors that drove 2023's extreme heat and climate disasters

Between the record-breaking global heat and extreme downpours, it's hard to ignore that something unusual is going on with the weather in 2023.

Analytical Chemistry Jan 5, 2024

Photochemistry and a new catalyst could make fertilizer more sustainable

Georgia Tech engineers are working to make fertilizer more sustainable—from production to productive reuse of the runoff after application—and a pair of new studies is offering promising avenues at both ends of the process.

Astronomy Dec 29, 2023

Larger and more frequent solar storms will make for potential disruptions and spectacular auroras on Earth

Bright auroras, with dancing lights in the sky, characterize the clear winter nights of northern Canada. Longer nights during the fall and winter also favor seeing more auroras, but the show is best outside of light-polluted ...

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