Water Discovered in the Atmosphere of an Exoplanet

Astronomers using the Hubble space telescope have discovered water in the atmosphere of an exoplanet in its star’s habitable zone. The water was detected as vapour in the atmosphere. The planet is called K2-18b.

Exoplanet found in unusually long, elliptical orbit

The exoplanet is three times more massive than Jupiter and circles its star in an unusual elliptical orbit, one that would carry it between the Sun’s asteroid belt and the orbit of Neptune if it were transported to Earth’s solar system.

Analysis shows 1-in-6 stars may host Earth-size planets

A new statistical analysis shows Earth-size planets are likely orbiting one in six Sun-like stars. The study is the most accurate estimate yet, researchers say, of the potential population of roughly Earth-size worlds in the Milky Way.

Moon-forming disk discovered around distant planet

Using Earth's most powerful array of radio telescopes, astronomers have made the first observations of a circumplanetary disk of gas and dust like the one that is believed to have birthed the moons of Jupiter.

Planet-hunting TESS spacecraft finds exoplanet smaller than Earth

The exoplanet is orbiting a small star 35 light years from Earth and is about 80 percent the size of Earth. It orbits its host sun, an M dwarf known as L 98-59, every 2.25 days.

Two Earth-Like Worlds Found Only 12.5 Light-Years Away

An international team of researchers recently detected two new Earth-like planets orbiting Teegarden’s Star, an M-type (red dwarf) star located just 12.5 light-years from the Solar System in the direction of the Aries constellation.

New study suggests tighter restrictions on exoplanet habitability

Accounting for the buildup of toxic gases predicted to occur in the atmospheres of most planets narrows the habitable zone for complex life by half and, in some cases, rules it out altogether, the study concludes.

A Very Rare Planet Discovered

Astronomers have discovered a very unusual planet in a distant solar system. The planet, called NGTS-4b, is three times the size of Earth, and about 20% smaller than Neptune and hotter than our very own Mercury.

18 New Earth-sized Exoplanets have been Found in Kepler's Data

Scientists working with data from the Kepler mission have discovered an additional 18 Earth-sized worlds. Among the 18 is the smallest exoplanet ever found.

A third planet found in binary star system

Astronomers have found a third exoplanet orbiting a binary Kepler-47 star system 3,340 light years from Earth, the first, and so far only, multi-planet circumbinary solar system discovered to date.

TESS finds its first Earth-size planet

The planet-hunting TESS spacecraft has found its first Earth-size planet orbiting a star located about 53 light years away. The star, HD 21749a, also hosts at least one other world, a warm “sub-Neptune” planet.

Harsh radiation no barrier to life on nearby exoplanets

Hopes for finding life on four rocky exoplanets relatively close to Earth have been boosted by new modelling that shows biological systems could survive the intense and prolonged bursts of X-ray and UV radiation.

Exoplanet with a mass almost 13 times that of Jupiter

Scientists have discovered a giant exoplanet with a mass almost 13 times that of Jupiter in an evolved binary system. This is the first confirmation of an exoplanet in a system of this kind.

Complex Life Might Require a Very Narrow Habitable Zone

A research into how life evolved on Earth has shown that water alone does not guarantee life – nor does the presence of oxygen gas. And that two other major biosignatures, carbon dioxide and carbon monoxide could be needed.

Newly Found Planet Could Host Primitive Life, Study Suggest

Barnard b or GJ 699 b – might have microbes or other simple life in its environment as long as there is a lot of thermal activity within the planet itself. This would theoretically provide enough energy for life to survive.