Comets that have hit Earth have been a mixed bag. Early in Earth's history, during the solar system's chaotic beginning, they ...

Prebiotic molecules central to life's earliest metabolic processes—chemical reactions in cells that change food into ...

Astronomers have spent decades trying to find Earth-like planets beyond our solar system. These worlds are small, cold, and ...

Over 4.6 billion years ago, Earth took shape from a spinning cloud of dust and gas surrounding the young sun. Tiny particles ...

One pair of leggings, one t-shirt or cotton dresses can make a difference, according to innovative women reinventing the ...

A recent study reveals that slow ocean expansion 15-6 million years ago caused sea levels to change and drop by up to 30 ...

The Moon's surface is covered by impact craters, ranging from microscopic pits to massive basins over 1,000 kilometers across ...

South Africa’s land is rising due to long-term drought. GPS and satellite data show the uplift is linked to drying ...

Two continents collided millions of years ago, forming a bridge that changed Earth's climate system and triggered one of ...

The boundless potential of astronomical discovery contrasts sharply with the backwardness and reaction promoted by Trump and ...

At the risk of understating the case, Europe has been shaken by recent geopolitical events. ‘Great power politics’ is back, ...