Nemesis Star Theory: The Sun's 'Death Star' Companion
WEBJul 21, 2017 · Nemesis is a theoretical dwarf star thought to be a companion to our sun. The theory was postulated to explain a perceived cycle of mass extinctions in Earth's history. Scientists...
Nemesis (hypothetical star) - Wikipedia
WEBNemesis is a hypothetical red dwarf [1] or brown dwarf, [2] originally postulated in 1984 [3] to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years), [2] somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years ...
Nemesis: Is There a Second Star in the Solar System?
WEBFeb 2, 2024 · Instead, they believe the Sun could have a companion dwarf star, which they’ve dubbed Nemesis. Why the ominous name? Well, scientists speculate that this dark destroyer could affect the orbits of objects originating from the far reaches of the solar system, sending them careening towards Earth and …
Dark stars: The first stars in the universe | Space
WEBJul 13, 2021 · Solar-mass dark stars near the galactic center would not have formed while trapping WIMPs inside them, but rather by capturing some of the dark matter that resides at the center of the...
Dark stars come into the light | Astronomy.com - Astronomy …
WEBSep 26, 2018 · In this dense environment, a mysterious substance known as dark matter ran amok in infant galaxies. Scientists think that out of this rich environment, a new breed of star was born: dark...
Dark Star Hypothesis Sees the Light of Day - Physics
WEBJul 20, 2023 · In their models, the researchers found that dark stars can grow to have the mass of a million Suns and can emit the light of a billion Suns. These supermassive dark stars are what Freese and her team now claim to have found in JWST data.
Our Sun: Facts - Science@NASA
WEBOur Sun is a 4.5 billion-year-old yellow dwarf star – a hot glowing ball of hydrogen and helium – at the center of our solar system. It’s about 93 million miles (150 million kilometers) from Earth and it’s our solar system’s only star. Without the Sun’s energy, life as we know it could not exist on our home planet.
The first dark stars | Astronomy.com - Astronomy Magazine
WEBDec 4, 2007 · Perhaps the first stars in the newborn universe did not shine, but instead were invisible “dark stars” 400 to 200,000 times wider than the sun and powered by the annihilation of mysterious ...
Eyes on the Solar System - NASA/JPL - NASA's Eyes
WEBExplore the 3D world of the Solar System. Learn about past and future missions.
Solar System Exploration - NASA Science
WEBThe solar system has one star, eight planets, five officially named dwarf planets, hundreds of moons, thousands of comets, and more than a million asteroids. Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms.