Jonathan P. Marshall

(he/him)
Impresión artística de un enjambre de cometas ocultando una estrella. NASA/JPL-Caltech

¿Qué produjo el severo oscurecimiento de la estrella ASASSN‑21qj?

La estrella ASASSN-21qj ha entrado en la lista de las afectadas por un fenómeno cósmico: la oscuridad. Los expertos discuten la razón por la que ocurre este fenómeno en estrellas jóvenes.
The mass of the Earth is big enough that the gravitational force it creates can pull the hard shape of ice, rock and metal into a sphere. NASA Earth Observatory images by Joshua Stevens, using Suomi NPP VIIRS data from Miguel Román, NASA's Goddard Space Flight Center

Curious Kids: Why is the Earth round?

Imagine the Earth pulling everything it is made up of, all of its mass, towards its centre. This happens evenly all over the Earth, causing it to take on a round shape.
One of the most detailed images of Pluto captured by New Horizons just before it’s closest approach to the dwarf planet. NASA/APL/SwRI

Beyond Pluto: New Horizons’ mission is not over yet

Now the flypast of Pluto is over the space probe New Horizons will begin sending the data back to Earth. It will take many months but what will it reveal about the dwarf planet?
New Horizons’ look at Pluto’s Charon-facing hemisphere reveals intriguing geologic details that are of keen interest to mission scientists. This image was taken on July 11, 2015, when the spacecraft was 4 million km from Pluto. NASA/JHUAPL/SWRI

Pluto and its collision‑course place in our solar system

The New Horizons spacecraft is only hours away from its closest approach to Pluto. It’s hoped the brief encounter will help answer many questions about the oddball member of our solar system.

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