#super-earths

[spaceflight-insider]

Two super-Earth exoplanets to be among future Webb targets

Two super-Earth exoplanets to be among future Webb targets

The James Webb Space Telescope, launched in December 2021, is now operational and ready to commence science observations. Credit: NASA Scientists have identified two relatively close super-Earth exoplanets to be studied by the now operational James Webb Space Telescope. (more…)

View On WordPress

[uicscience]

Measuring the melting curve of iron at super-Earth core conditions

A new study appearing in Science suggests that Earth-like planets outside of the solar system are likely to have a longer duration of magnetically shielded habitability than Earth.

University of Illinois Chicago professor Russell Hemley and scientists at Lawrence Livermore National Laboratory, along with other collaborators, sought to determine the high-pressure melting curve and structural properties of iron up to 1,000 GPa (nearly 10,000,000 atmospheres), which is three times the pressure of Earth’s inner core and nearly four times greater pressure than previous experiments conducted on the material.

The melting curve — where a solid turns to a liquid — is one of the most significant changes a material can undergo, transitioning from a material with strength to one without. The temperature at which this happens depends on the pressure, and therefore depth, within a planet, and iron is the dominant core-forming material of Earth-like planets.

Read more about the significance of the experiments via UIC today.

[netmassimo]

An article published in 'The Astronomical Journal' reports a study on two 'bare' super-Earths, as they lack a primordial atmosphere.

An article published in "The Astronomical Journal" reports a study on two "bare" super-Earths, as they lack a primordial atmosphere. A team of researchers used the Subaru telescope and other instruments for a follow-up study of two candidate exoplanets discovered by NASA's TESS space telescope and classified as TOI-1634b and TOI-1685b. Both candidates were confirmed and showed some characteristics in common since they're super-Earths with orbits that are very close to their stars, both red dwarfs, with no primordial atmosphere. Their study will help to understand the evolution of the atmospheres of hot rocky planets.

[dr-afsaeed]

Researchers Reveal Secret of Odd Conformation in Solar System Planets For very nearly 10 years, space experts have attempted to clarify why such a significant number of sets of planets outside our nearby planetary group have an odd arrangement — their orbits appear to have been pushed separated by an incredible obscure system.

[entertainmentnerdly]

"Super-Earths" and Neptune-sized planets could be forming around young stars in much greater numbers than scientists thought, new research suggests. An unknown treasure trove of planets found hiding in dust via /r/space https://ift.tt/2L1CDmJ