×
GreekEnglish

×
  • Politics
  • Diaspora
  • World
  • Lifestyle
  • Travel
  • Culture
  • Sports
  • Cooking
Saturday
14
Mar 2026
weather symbol
Athens 11°C
  • Home
  • Politics
  • Economy
  • World
  • Diaspora
  • Lifestyle
  • Travel
  • Culture
  • Sports
  • Mediterranean Cooking
  • Weather
Contact follow Protothema:
Powered by Cloudevo
> World

Mysterious Earth-sized planet could be hiding in plain sight in our Solar System

If such a planet exists, researchers say it would have a mass about 1.5 to...3 times that of Earth!

Newsroom September 6 11:17

Astronomers have found likely evidence of an Earth-like planet in the Solar System that may be circling the Sun in an orbit beyond Neptune.

Physicists, including those from the National Astronomical Observatory of Japan, said the planet could be much closer than the hypothetical Planet Nine thought to exist in the far outer edges of the Solar System.

Several studies in the past have suggested there is likely a yet-undiscovered planet beyond the Kuiper Belt – a stellar disk of materials such as asteroids, space rocks, comets around the Sun in the outer Solar System past the orbit of Neptune.

See Also:

>Related articles

Cuba: Communist Party building attacked during blackout protests

Islamist group claimed responsibility for the attack on a Jewish school in Amsterdam

The lost Alexandria on the Tigris founded by Alexander the Great discovered in Iraq: Its enormous size surprised archaeologists (photos)

Cracking the code to discover ancient Tarot symbolism & forgotten universal knowledge

In the new research, published recently in The Astronomical Journal, scientists found that some of the objects in the Kuiper Belt behave in a way indicative of the presence of a small planet among them.

Continue here: The Independent

Ask me anything

Explore related questions

#earth#mysterious#Nibiru#planet#science#solar system#space#universe#world
> More World

Follow en.protothema.gr on Google News and be the first to know all the news

See all the latest News from Greece and the World, the moment they happen, at en.protothema.gr

> Latest Stories

Cuba: Communist Party building attacked during blackout protests

March 14, 2026

Islamist group claimed responsibility for the attack on a Jewish school in Amsterdam

March 14, 2026

From today the iconic painting of Delacroix “Greece in the ruins of Messolonghi” is on display (Photos)

March 14, 2026

Earthquake off the coast of Chania

March 14, 2026

Dendias: The sacrifice of Evagoras Pallikaridis is an emblematic example of the bravery of our Cypriot brothers and sisters

March 14, 2026

A conversation with Master Chanter Dimitris Katsiklis on directing Orthodox Marketplace

March 14, 2026

Weather: Mild and spring-like in the next ten days, with small variations

March 14, 2026

PM Mitsotakis: Greeks can trust the Armed Forces in these troubled times

March 14, 2026
All News

> Culture

From today the iconic painting of Delacroix “Greece in the ruins of Messolonghi” is on display (Photos)

The arrival of the painting of Eugene Delacroix has a special historical and emotional weight, said Lina Mendoni - The painting will be hosted at the Xenokrateio Archaeological Museum of Messolonghi until November

March 14, 2026

The lost Alexandria on the Tigris founded by Alexander the Great discovered in Iraq: Its enormous size surprised archaeologists (photos)

March 14, 2026

Caroline myss in Athens for a two-day workshop

March 13, 2026

Deutsche Welle is collecting signatures for the rescue of the Greek programme, the official campaign runs until 16 April

March 13, 2026

“Obedient” women and “tough” men: Gen Z is turning back to…tradition, study shows

March 12, 2026
Homepage
PERSONAL DATA PROTECTION POLICY COOKIES POLICY TERM OF USE
Powered by Cloudevo
Copyright © 2026 Πρώτο Θέμα