Artist's impression of a terrestrial planet being captured by a twin star. Credit: intouchable, OPENVERSE Data, at the end of the day, is our first and last source of understanding. We look, build models to match what we see, predict things we haven’t seen yet, and then ]take more data to confirm those models. Sometimes, the model is as simple as two stars born out of the same cloud of material should have the same composition. New data shows us that in 8% of the binary stars in a 91-binary system survey, that isn’t so. In these systems that just have to be different, researchers found...
Closer Look: We are Space Stuff
Courtesy TeePublic It is possible to buy stickers, sweatshirts, mugs, and all manner of other stuff and things emblazoned with the simple phrase, “We are star stuff”. Carl Sagan popularized this phrase, and it serves as a gentle reminder that all the complex atoms -...
Early Universe Clues Found Locally
A portion of the dwarf galaxy Wolf–Lundmark–Melotte (WLM) captured by the James Webb Space Telescope’s Near-Infrared Camera. The image demonstrates Webb’s remarkable ability to resolve faint stars outside the Milky Way. Color translation: 0.9-micron light is shown in...
Closer Look: Supernovae Reveal Galactic Expansion
An artist’s impression of a Type Ia supernova – the explosion of a white dwarf locked in a binary system with a companion star. Credit: ESA/ATG medialab/C. Carreau As a scientist, I get a lot of weird hate mail. There are the folks telling me relativity is wrong....
Neutron Stars Have Quarky Cores
Artist’s impression of the different layers inside a massive neutron star, with the red circle representing a sizable quark-matter core. Credit: Jyrki Hokkanen, CSC Ok, hold onto your brains; things are about to get dense around here. Our universe’s most massive stars...
Finding the Source of Low-Hydrogen Supernovae
Visualization of a binary star experiencing mass transfer. Credit: Ylva Götberg One factor upping the difficulty of understanding our universe is… the complexity of our universe. It sometimes feels like every time we think we’re getting a handle on how things work,...
Closer Look: Solar Max is Coming in 2025
People in more northern and southern latitudes may have noticed that aurorae are getting more common than we’ve seen in recent years. This is thanks to our Sun’s habit of flipping its magnetic poles every eleven years. As the Sun’s magnetic field becomes quite chaotic...
500,000 Stars, with More Born Regularly
Credit: NASA, ESA, CSA, STScI, and S. Crowe (University of Virginia) Our Solar System lives in a nice suburb of the Milky Way. Sitting about 25,000 light years from the galactic center, we’re in a good place to view what’s happening in the core district, but far...
Euclid releases first images
Just when we thought nothing could be more stunning than the images being released almost weekly by JWST, along comes the newest space telescope on the block - the European Space Agency’s Euclid. The mission launched in July of this year, and as with JWST, has...
Gamma Ray Burst reveals Tellurium
Image Credit: NASA, ESA, CSA, STScI, A. Levan (IMAPP, Warw), A. Pagan (STScI) One of the awesome things about growing older as an astronomer is you get to see the weird stuff no one understood in your youth become the everyday normal of your middle age. While we still...
Eta Carina gives up 260year Secret to Chandra
Credit: X-ray: NASA/SAO/GSFC/M. Corcoran et al.; Image Processing: L. Frattare, J. Major, N. Wolk (SAO/CXC) Astronomers kind of live to see weird weird objects. While likely always visible to humans, this southern hemisphere star transformed from kind of meh to the...