Late in the day on Thursday, astronomers released this new image of 2020 CD3, a small object now confirmed to be orbiting Earth temporarily. It was apparently captured into Earth orbit 3 years ago. Its fate, here.
A new study from researchers in the Netherlands shows how scientists can detect exoplanets orbiting red dwarf stars, and learn about their environments, from the radio waves generated by auroras on those worlds.
Posted by Andy Briggs in Astronomy Essentials | Space|5 days ago
Dark matter doesn’t emit light. It can’t be directly observed with any of the existing tools of astronomers. Yet astrophysicists believe it and dark energy make up most of the mass of the cosmos. What dark matter is, and what it isn’t. here.
Meet Arrokoth – the most distant object yet visited by earthlings – seen by the New Horizons spacecraft in early 2019. It’s very old, one of the first generation of objects in our solar system. Here’s why it looks like a snowman.
Astronomers report on the very distant galaxy XMM-2599. It existed when the universe was very young, yet contains some 300 billion stars. It must have formed stars at a very rapid rate and then stopped. Why?
On this date 90 years ago, Clyde Tombaugh was searching for a 9th planet when he discovered Pluto. In doing so, he unknowingly opened the door to the vast “3rd zone” of our solar system, known today as the Kuiper Belt.
Isn’t this cool? Scientists at the famous Arecibo Observatory in Puerto Rico made this rare find just days after resuming post-earthquake operations. It’s a moon orbiting the near-Earth asteroid 2020 BX12.
Posted by EarthSky in Space | Today's Image|2 weeks ago
The European Southern Observatory’s Very Large Telescope is in northern Chile. Astronomers used it to capture the unprecedented dimming of Betelgeuse, a red supergiant star in the constellation of Orion. The new images show how the apparent shape of this star is changing.
For the first time, a fast radio burst has been found to be repeating, in a regular 16-day cycle. The baffling detection from the CHIME radio telescope deepens the mystery of these bizarre intergalactic objects.