What if, one night, the moon simply disappeared? Would we miss it?
About 84 million years ago, Earth's crust and the mantle below it rotated around the planet's inner core - causing the Earth to tip over.
New research shows the iron crystals that comprise Earth's inner core grow unevenly, with more iron forming under Indonesia, on the core's east side.
An annular solar eclipse will form in the sky at 6:53 a.m. ET on Thursday. The sight is partially visible in the northeastern US.
A huge asteroid, known as 2021 KT1, will make a "close approach" to Earth on June 1 at about 10:24 am EDT, according to NASA.
The best viewing spots in the US are in Alaska and Hawaii, but most western states should have a decent view of the eclipse.
The stratosphere - the layer of Earth's atmosphere between 7.5 and 31 miles up - is shrinking due to greenhouse-gas emissions, a new study found.
A new study suggests sharks use the magnetic field to orient themselves on long migrations. They're far from the only animals with that sixth sense.
A recent study suggests that melting ice from polar glaciers has shifted Earth's axis - changing where the north and south poles are located.
Supermoons are rare full moons that occur when the moon is the closest it can get to Earth. According to NASA, there will be two supermoons in 2021.
There's a growing weak spot in Earth's magnetic field. Scientists say it may be due to giant pieces of an ancient planet buried inside Earth.
The Earth already spins on a slight tilt, causing the seasons. If it spun horizontally, extreme winters and summers would doom life as we know it.
Chunks of dense rock hundreds of miles tall lie in Earth's mantle. They may have come from an ancient planet named Theia that once hit Earth.
All planetary systems have a barycenter, a point where their mass is balanced. In the Earth-moon system, this is just below Earth's surface.
On Friday night, the asteroid Apophis will pass by Earth. When it returns in 2029, its orbit may put it on a collision path with some satellites.
SpaceX, Amazon, OneWeb and others want to bring high-speed internet to every part of the world. But experts worry this could come at a cost for space exploration.
Our protective shield might soon go into a transformation that could threaten all the lives on Earth.