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Jure Japelj

Image of AB Aurigae’s protoplanetary disk shows wispy spirals and a bright blobby protoplanet. A scale shows that the protoplanet’s orbit is about 3 times wider than Neptune’s orbit around the Sun.
Posted inNews

Giant Planet’s Formation Caught in Action

by Jure Japelj 11 April 202225 April 2022

Astronomers took a direct image of a massive protoplanet embedded in a protoplanetary disk. The system provides strong evidence for an as-yet-unconfirmed theory of planet formation.

An exoplanet with an ice-rock surface and hazy atmosphere orbits a star.
Posted inNews

Icy Worlds Have Mixed Ice-Rock Interiors

by Jure Japelj 23 February 202223 February 2022

Scientists make a case for a more realistic treatment of icy planets’ structure in which ices and rocks are mixed instead of separated in layers.

An artist’s rendering of early Earth with a huge Moon looking over the alien landscape, including oceans of water
Posted inNews

How Much Did the Moon Heat Young Earth?

by Jure Japelj 11 January 202211 January 2022

Tidal heating may have raised the surface temperature of early Earth and triggered global volcanism, a new study says.

A protoplanet is covered by magma oceans and surrounded by a field of planetesimals.
Posted inNews

Noble Gas Hints at Mars’s Rapid Formation

by Jure Japelj 18 October 202121 March 2022

A new study finds that Mars’s mantle is neon-rich, putting constraints on the planet’s formation history.

NASA astronaut Karen Nyberg enjoys a view of Earth from the windows of the International Space Station. Earth looks blue and white, with a thin layer of atmosphere at its limb.
Posted inNews

Astronomers for Planet Earth

by Jure Japelj 16 July 202110 October 2021

A volunteer network of astronomers is using a unique astronomical perspective to educate people about the climate crisis while at the same time striving for sustainability in academia.

Artist’s depiction of Earth in a shower of cosmic rays coming from a background Sun.
Posted inNews

Taking Stock of Cosmic Rays in the Solar System

by Jure Japelj 5 May 202125 October 2021

Scientists seek to understand the elusive properties of stellar and galactic cosmic rays before searching for life on exoplanets.

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