×
GreekEnglish

×
  • Politics
  • Diaspora
  • World
  • Lifestyle
  • Travel
  • Culture
  • Sports
  • Cooking
Monday
12
Jan 2026
weather symbol
Athens 6°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

Hits on Russian Lukoil oil platforms from Ukraine

Cartel de los Soles at the Presidential Palace of Caracas: The drug-trafficking network that Chávez set up with Sinaloa and that kept Maduro in power

Trump “weighs” a strike on Iran: Military not ready, fears of retaliation – “Foreign terrorists” kill civilians & burn mosques, Pezeshkian says

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

Maria Karystianou’s political move divides opinion — Criticisms after early acclaim

January 12, 2026

Golden Globes: Paul Thomas Anderson’s ‘One Battle After Another’ and Netflix’s ‘Adolescence’ dominate the awards

January 12, 2026

Rubina Aminian: The 23-year-old student who was shot at point-blank range by Iran’s security forces

January 12, 2026

Why Mitsotakis agreed to two meetings with farmers and livestock breeders

January 12, 2026

Bloodshed in Iran: Over 500 dead in protests as Trump weighs “Very strong options” for intervention

January 12, 2026

Severe cold wave hits Greece: Snow expected – Weather in Attica

January 12, 2026

Hits on Russian Lukoil oil platforms from Ukraine

January 11, 2026

In the shadow of the bribery video, Christodoulides’ wife resigns from the Independent Social Support Agency, denounces “relentless” attacks

January 11, 2026
All News

> World

Rubina Aminian: The 23-year-old student who was shot at point-blank range by Iran’s security forces

Her family describes scenes of mass death as rights groups report hundreds killed during nationwide protests

January 12, 2026

Bloodshed in Iran: Over 500 dead in protests as Trump weighs “Very strong options” for intervention

January 12, 2026

Hits on Russian Lukoil oil platforms from Ukraine

January 11, 2026

Cartel de los Soles at the Presidential Palace of Caracas: The drug-trafficking network that Chávez set up with Sinaloa and that kept Maduro in power

January 11, 2026

Trump “weighs” a strike on Iran: Military not ready, fears of retaliation – “Foreign terrorists” kill civilians & burn mosques, Pezeshkian says

January 11, 2026
Homepage
PERSONAL DATA PROTECTION POLICY COOKIES POLICY TERM OF USE
Powered by Cloudevo
Copyright © 2026 Πρώτο Θέμα