Orbit of Earth

Here's what to know about how we split up the year using the Earth's orbit.

The vernal equinox heralds the arrival of spring in the Northern Hemisphere (finally). But have you heard the myth about balancing an egg on its end?

The vernal equinox heralds the arrival of spring in the northern hemisphere. But is it the only day you can balance an egg on its end?

Astronomers in Europe said they have discovered what might be the smallest exoplanet found so far. If real, it is smaller than our moon and orbits a pulsar. The post Possible smallest exoplanet found … and it orbits a pulsar first appeared on EarthSky.

The West Antarctic ice sheet could cause metres of sea level rise if it collapses – but more than 120,000 years ago, it may have survived an even warmer period than it is experiencing now

The Parker Solar Probe will swoop just 6.1 million kilometers above the sun's surface on Christmas Eve. Scientists are thrilled at what we might learn

How large is the biggest galaxy in the Universe?. It was barely a century ago that we thought the Milky Way encompassed the entirety of the Universe. Now? We're not even a special galaxy..

In six billion years the sun will expand into a red giant. That process should consume Mercury, and maybe Venus.

The discovery of an Earth-like planet 4,000 light years away in the Milky Way galaxy provides a preview of one possible fate for our planet billions of years in the future, when the sun has turned into a white dwarf, and a blasted and frozen Earth has migrated beyond the orbit of Mars.

For almost two months, Earth will joined by a new mini-moon in it's gravitational orbit, believed to be an asteroid known as 2024 PT5

Long-sought evidence of alien life could lurk in Earth's oceans, or in 'weird' objects orbiting near our planet, Harvard astrophysicist Avi Loeb says. Here is his plan to find it.

Mars' polar caps are generally similar, but they also differ in some some aspects. A new study shows how the sublimation of carbon dioxide ice plays a key role. The post Why are Mars' polar caps different from each other? first appeared on EarthSky.

When Earth blocks sunlight, its shadow falls on the Moon, creating a captivating spectacle. Find out how often they occur and what they look like.

5 big surprises when comparing the worlds in our Solar System. From size to mass to density and more, each world in our Solar System is unique. When we compare them, the results are truly shocking..

After more than a decade of tracking asteroids and comets that could pose a threat to Earth, NASA's Near-Earth Object Wide-field Infrared Survey Explorer...

Interest in Earth-like planets orbiting within the habitable zone of their host stars has surged, driven by the quest to discover life beyond our solar system. But the habitability of such planets, known as exoplanets, is influenced by more than just their distance from the star.

In this except from "Space Camp," a special series from NPR science podcast Short Wave, host Regina Barber delves into Pluto's demotion from planet to dwarf planet.

Material from the moon's far side collected by China's Chang'e 6 spacecraft could solve a long-standing lunar mystery

Astronomers may have solved the mystery of how hot Jupiter exoplanets are born, finding a gas giant with a weird orbit in the process of transforming into...

See the circle of galaxy clusters and voids that surround us in this map of the nearby cosmos, extending 200 million light years in each direction