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ancient planet The Remains of an Ancient Planet Lie Deep Within Earth
Alien Life On the Road to Spotting Alien Life
Two-Faced Star Two-Faced Star Exposed
Planet Survives Planet Survives Threat of Engulfment by Its Star
Earth Formed from Dry, Rocky Building Blocks Earth Formed from Dry, Rocky Building Blocks
NASA Perserverance Images From NASA's Perseverance May Show Record of Wild Martian River
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The Remains of an Ancient Planet Lie Deep Within Earth

The remnants of an ancient planet that collided with Earth to form the Moon lie deep within the earth, according to a new model from Caltech researchers and collaborators.

Articles

ancient planet
The Remains of an Ancient Planet Lie Deep Within Earth
Alien Life
On the Road to Spotting Alien Life
moon quake
The Lunar Alarm Clock: New Study Characterizes Regular Moonquakes
Two-Faced Star
Two-Faced Star Exposed
Planet Survives
Planet Survives Threat of Engulfment by Its Star
Eiler_Lab_Zeichner
The Search for Ancient Life on Mars Gets a Boost from a Tech Pioneer
Earth Formed from Dry, Rocky Building Blocks
Earth Formed from Dry, Rocky Building Blocks
Bethany
Moon Gazing: The Long Story of Lunar Research at Caltech
NASA Perserverance
Images From NASA's Perseverance May Show Record of Wild Martian River
Mars meteorite
The Mysterious Origins of Martian Meteorites
mars-jpl
What Will Mars Sample Return Do? “It's an Enormously Long List”
star eats planet
Star Eats Planet, Brightens Dramatically
Terapixel image of mars
Scientists Unveil a 5.7 Terapixel Global Image of Mars
New Auroras Found Glowing in the Skies of Jupiter's Moons
New Auroras Found Glowing in the Skies of Jupiter's Moons
NASA's Perseverance Rover Set to Begin Third Year at Jezero Crater
NASA’s Perseverance Rover Set to Begin Third Year at Jezero Crater
urorae.9
New Aurorae Detected On Jupiter's Four Largest Moons
Rocky planets
How Do Rocky Planets Really Form?
deep minerals
New Results Reveal Surprising Behavior of Minerals Deep in the Earth
JezeroCrater
Rock Samples from the Floor of Jezero Crater Show Significant Contact with Water Together with Possible Organic Compounds
Keck Observatory's Newest Planet Hunter Puts Its Eye on the Sky
Keck Observatory's Newest Planet Hunter Puts Its Eye on the Sky
wind
Wind Drives Geology on Mars These Days
As Mars Perseverance Rover Rolls Along the Delta, Scientists at Caltech Roll Up Their Sleeves
As Mars Perseverance Rover Rolls Along the Delta, Scientists at Caltech Roll Up Their Sleeves
Observatory in Chile Takes Highest-Resolution Measurements of Asteroid Surface Temperatures Ever Obtained from Earth
Observatory in Chile Takes Highest-Resolution Measurements of Asteroid Surface Temperatures Ever Obtained from Earth
Clear as Mud: How Tiny Plants Changed the Planet, 488 Million Years Ago
Clear as Mud: How Tiny Plants Changed the Planet, 488 Million Years Ago
Puffy Planets Lose Atmospheres, Become Super-Earths
Puffy Planets Lose Atmospheres, Become Super-Earths
Large
Large-Scale Liquid Water Existed on Mars Much Longer than Suspected
NASA's Perseverance Mars Rover Makes Surprising Discoveries
NASA's Perseverance Mars Rover Makes Surprising Discoveries
Saturn Makes Waves in Its Own Rings
Saturn Makes Waves in Its Own Rings
Giant Planets Found in the Stellar Suburbs
Giant Planets Found in the Stellar Suburbs
NASA Balloon Detects California Earthquake – Next Stop, Venus?
NASA Balloon Detects California Earthquake – Next Stop, Venus?
What Happened to Mars's Water? It is Still Trapped There
What Happened to Mars's Water? It is Still Trapped There
Ocean Currents Predicted on Enceladus
Ocean Currents Predicted on Enceladus
Life as We Do Not Know It: Astrobiology and the Mars 2020 Mission
Life as We Do Not Know It: Astrobiology and the Mars 2020 Mission
Getting To Know Super-Earths
Getting To Know Super-Earths
Probing A New Class of Exoplanets
Probing A New Class of Exoplanets
Solving the Strange Storms on Jupiter
Solving the Strange Storms on Jupiter
Inventing Tools for Detecting Life Elsewhere
Inventing Tools for Detecting Life Elsewhere
Titan is Migrating Away from Saturn 100 Times Faster than Previously Predicted
Titan is Migrating Away from Saturn 100 Times Faster than Previously Predicted
The Dance of Jupiter's Moons
The Dance of Jupiter's Moons
Writing the Next Chapter in the Search for Habitable Worlds
Writing the Next Chapter in the Search for Habitable Worlds
New Spin on Planet Formation Mysteries
New Spin on Planet Formation Mysteries