Solar System's edge redefined

New work from Carnegie's Scott Sheppard and Chadwick Trujillo of the Gemini Observatory reports the discovery of a distant dwarf planet, called 2012 VP113, which was found beyond the known edge of the Solar System.

Water detected on planet outside our solar system

Water has been detected in the atmosphere of a planet outside our solar system with a new technique that could help researchers to learn how many planets with water, like Earth, exist throughout the universe.

Largest solar system moon detailed in geologic map

More than 400 years after its discovery by astronomer Galileo Galilei, the largest moon in the solar system – Jupiter's moon Ganymede – has finally claimed a spot on the map.

Asteroid diversity points to a "snow globe" solar system

Our solar system seems like a neat and orderly place, with small, rocky worlds near the Sun and big, gaseous worlds farther out, all eight planets following orbital paths unchanged since they formed.

The most important alarm clock in the solar system

At 10:00 GMT on Monday, the most important alarm clock in the Solar System will wake up ESA’s sleeping Rosetta spacecraft.

Scientists solve mystery of odd patterns of oxygen in solar system's earliest rocks

Cosmochemists have solved a long standing mystery in the formation of the solar system: Oxygen, the most abundant element in Earth's crust, follows a strange, anomalous pattern in the oldest, most pristine rocks, one that must result from a different chemical process than the well-understood reactions that form minerals containing oxygen on Earth.

NASA’s IBEX provides first view of the solar system’s tail

It has long been assumed that our solar system, like a comet, has a tail. Just as any object moving through another medium – for example, a meteor traveling through Earth’s atmosphere – causes the particles to form a stream trailing off behind it.

Saturn "twin" found in another solar system

A scientific team led by University of Louisville doctoral student Karen Collins has discovered a hot Saturn-like planet (KELT-6b) in another solar system 700 light-years away.

Chelyabinsk asteroid was a game changer

In February, a speeding asteroid slammed into our atmosphere and exploded high over Russia’s Ural region, injuring hundreds and causing millions of euros of damage. What should we do if we have a similar – or even bigger – strike in the future?

Astronomers scope out alien solar system in detail

Researchers say they've conducted the first reconnaissance of a distant planetary system, collecting the spectra of four red exoplanets which orbit a star 128 light years away from Earth.

Mysterious 'ribbon' at edge of solar system explained

NASA's Interstellar Boundary Explorer (IBEX) spacecraft has helped explain the striking narrow ribbon of charged particles emanating from the boundary of the solar system.

Team identifies auroras outside our solar system

University of Leicester planetary scientists believe they've found the first clear evidence that auroras occur outside our solar system.

Young stars and planets grow up together

Astronomers have shed further light on the mysterious process of how young stars and their planetary systems form.

Voyager 1 hits 'magnetic highway' to outer space

NASA's Voyager 1 spacecraft has entered the last region it has to cross before reaching interstellar space.

Frozen water on Mercury reveals its cooler side

NASA’s Messenger spacecraft has found that water ice likely exists on the frozen poles of Mercury, the planet closest to the sun.

Dwarf planet Makemake found to be airless

Unlike its bigger sister Pluto, dwarf planet Makemake doesn't have an atmosphere, new observations have revealed.

Dying star briefly reborn

European Space Agency astronomers have found evidence for a dying sun-like star coming back to life - something they say may happen to our own sun in a few billion years.

Solar system 'not so special as thought'

Our solar system didn't, as previously thought, take twice as long as most to form, new research shows.

Voyager 1 turns 35 as it leaves solar system for ever

Thirty-five years ago today, NASA's Voyager 1 spacecraft set off on its journey to interstellar space - and it's now teetering on the edge.

New-found solar system looks like our own

Astronomers have discovered the first exoplanetary system to look like our own solar system, with regularly-aligned planets.