×
GreekEnglish

×
  • Politics
  • Diaspora
  • World
  • Lifestyle
  • Travel
  • Culture
  • Sports
  • Cooking
Saturday
11
Apr 2026
weather symbol
Athens 16°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

Meta shuts down Romania’s largest independent newspaper page, sparking press freedom concerns

Turkey denied Cyprus the right to participate in the UN Annual Climate Change Conference

The 2+1 phases of US–Iran negotiations over the future of the war (Update)

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

Watch Live from Jerusalem: Holy Fire ceremony at the Church of the Holy Sepulchre

April 11, 2026

Macron in Athens on 24-25 April: Focus on defence cooperation between Greece and France

April 11, 2026

Meta shuts down Romania’s largest independent newspaper page, sparking press freedom concerns

April 11, 2026

Turkey denied Cyprus the right to participate in the UN Annual Climate Change Conference

April 11, 2026

The 2+1 phases of US–Iran negotiations over the future of the war (Update)

April 11, 2026

From the “flying priest” of Chios to the “Gloria” of Zakynthos – The First Resurrection marked by deafening noise (video)

April 11, 2026

Videos & photos from the historic return of the Artemis II mission from the Moon: The path opens for permanent human presence in space

April 11, 2026

Europeans favor banning social media for minors — 3 in 4 call for age limits

April 10, 2026
All News

> Greece

In reverence, the emotional deposition in Jerusalem, see photos & video

The Holy Temple of the Resurrection opened after many days due to the war between Israel and Iran

April 10, 2026

In the final stretch for the accreditation of joint master’s degrees: Aiming for their launch in the coming academic year

April 10, 2026

Schedule for Epitaph Procession today (10/4)

April 10, 2026

Perfect weather for Easter excursions, according to Tsatrafyllia’s forecast

April 10, 2026

Easter in Greece: The customs that continue in Greek tradition – From Nafpaktos to Corfu

April 10, 2026
Homepage
PERSONAL DATA PROTECTION POLICY COOKIES POLICY TERM OF USE
Powered by Cloudevo
Copyright © 2026 Πρώτο Θέμα