The greenhouse effect and plate tectonics are essential for maintaining water on the Earth’s surface.
NASA/Goddard Space Flight Center/Reto Stöckli
The presence of water on the Earth's surface is the result of a subtle balance between different mechanisms in the atmosphere and below the surface.
Falling into a black hole is easily the worst way to die.
John M Lund Photography Inc/Getty Images
The scariest beast in the universe has an insatiable appetite and shreds its victims.
Arctic sea ice levels have been falling for several decades.
The pattern of autumn sea ice growth has been completely disrupted. The director of the National Snow and Ice Data Center explains what's happening.
Photo of a nearly full Moon shining brightly on the Earth’s atmosphere, taken from the International Space Station.
The Earth's magnetic field was most likely weaker when life evolved on our planet than it is today.
A red hazy sunset over Indiana caused by wildfire smoke from the Western U.S.
SOPA Images/LightRocket va Getty Images
Last week, much of the Midwest and eastern US experienced hazy skies and red sunsets. The cause was smoke transported from the Western US by the jet stream and spread as far as Boston and even Europe.
Climate Explained is a collaboration between The Conversation, Stuff and the New Zealand Science Media Centre to answer your questions about climate change. If you have a question you’d like an expert…
Artist’s interpretation of the inside of the Sun.
James Josephides, CAS Swinburne University of Technology
If you could go right into the middle of the Sun, everything would be incredibly bright - and perhaps a little bit pink.
An artist’s concept of a hypothetical planet with a distant sun.
In the search for the hypothetical Planet Nine, scientists may have uncovered another explanation for the patterns in the orbits of Kuiper Belt objects.
Earth and Moon as seen by the Galileo spacecraft.
From the Moon's size to the first calculator, the ancients made some jawdropping discoveries without modern technology.
As the Earth orbits the Sun, the Sun appears to move through the ancient constellations of the zodiac.
Astronomy and astrology do not agree on the dates of the zodiac constellations.
The Sun by the Atmospheric Imaging Assembly of NASA s Solar Dynamics Observatory.
Solar activity is sometimes blamed for climate change but the data suggests otherwise.
The Moon passes in front of the Sun during this eclipse at Lake Bolac, Victoria, April 29, 2014.
On December 26 a solar eclipse will be visible from northern Australia, southern Asia and parts of the Middle East.
In 2015, NASA’s New Horizons spacecraft looked back toward the sun and captured this near-sunset view of the rugged, icy mountains and flat ice plains extending to Pluto’s horizon.
Many people are still upset that Pluto was demoted from being a planet. But definitions of various celestial objects are fairly fluid. So whether it is an asteroid or moon or planet is up for debate.
We don’t know why the solar corona is so hot.
The Parker Solar Probe makes it closest-ever approach to the sun.
Installing solar panels on a roof.
Solar cells make electricity directly from sunlight, but how do they do it?
This artist’s impression shows a view of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system.
Beyond the outer edge of the Solar System, mysterious, unknown worlds await by the thousands. Astronomers can now finally find them and explore them - but will we find another Earth?
NASA Ames/JPL-Caltech/T. Pyle
Kepler-452b is sometimes called 'Earth 2.0', but there's a lot we still don't know about it.
In Asia, umbrellas are commonly used as a form of sun protection.
AP Photo/Kin Cheung
In Asian countries, many people wield umbrellas to protect them from the sun. American women used to as well – but then stopped.
When it was young, the Sun spun fast – very fast. It would do one rotation in a just one or two Earth days.
Yes, the Sun absolutely spins. In fact, everything in the universe spins. Some things spin faster than the Sun, some are slower and some things spin 'backwards'.
It’s true the Sun often looks orange, but it isn’t really orange. It is white.
The very hottest stars actually glow blue.