Hubble Telescope Tracks Dwarf Galaxy Stars to Map Dark Matter

The Draco dwarf is a faint, star-poor but dark-matter rich galaxy. Here we see Hubble zooming in on some of its stars.

The Hubble Space Telescope has shown that dark matter is concentrated in the core of a nearby dwarf galaxy, a discovery that comes to the aid of the Standard Model of Earth. cosmology. This model basically predicts that dark matter is “cold,” but recent findings seem to indicate that the substance is “warm.” However, these … Read more

Astronomers discover dozens of double-aligned white dwarf binaries

The detection efficiency for a double-line DWD where the two stars have similar flux contributions. Credit: arXiv (2024). DOI number: 10.48550/arxiv.2407.02594 An international team of astronomers reports the discovery of 34 rare double-lined white dwarf binary systems using the Intermediate-dispersion Spectrograph and Imaging System (ISIS) on the William Herschel Telescope (WHT). The finding was detailed … Read more

‘Once-in-a-lifetime’: Rare chance to see explosion at dwarf star 3,000 light-years away

In what’s been called a “once-in-a-lifetime event,” light from a thermonuclear explosion on a star has been traveling toward Earth for thousands of years and could arrive here at any moment. T Coronae Borealis (also known as T Cor Bor, T CrB, and the Blaze Star) will be as bright as the North Star (for … Read more

Missing Dwarf Galaxies Found Near Milky Way in Worst Spot

The Milky Way isn’t the only galaxy in its little corner of the universe. Small, faint dwarf galaxies, many of which contain only a thousand stars, are speeding around our cosmic neighborhood on long, graceful circuits. It’s unclear exactly how many there are, but there should be many more than the 60 or so we’ve … Read more

See a starburst galaxy, ablaze with explosive star birth, and devouring dwarf galaxies (video)

A starburst galaxy, teeming with forming stars, devours surrounding dwarf galaxies in a stunning new image from the twin telescopes Gemini North. Bright red and pink wisps of gas and dust and bright white and blue stars seen in the image make up the galaxy NCG 4449, also known as Caldwell 21, located about 13 … Read more

Astronomers discover an Earth-sized exoplanet orbiting a nearby ultra-cool dwarf star

This article was reviewed according to Science fact checked peer-reviewed publication trusted source proofread OK! by Tomasz Nowakowski, Phys.org Discovery transit photometry of SPECULOOS-3 b. Credit: Gillon et al., 2024. × close to Discovery transit photometry of SPECULOOS-3 b. Credit: Gillon et al., 2024. An international team of astronomers reports the discovery of a new … Read more