Science

cross-posted from: https://lemmy.ml/post/1419778

ESA’s Euclid mission is designed to bring the dark side of the Universe to light. Based on the way galaxies rotate and orbit one another, and the way in which the Universe is expanding, astronomers believe that two unseen entities dominate the composition of our cosmos. They call these mysterious components dark matter and dark energy, yet to date we have not been able to detect either of them directly, only inferring their presence from the effects they have on the Universe at large.

To better understand what dark matter and dark energy may be, we need a mission that can more closely reveal what effects they have had on galaxies, galaxy clusters and the expansion of the Universe itself. Euclid is that mission.

ESA’s Euclid mission will create a 3D-map of the Universe, with the third dimension representing time itself. The further away a galaxy is located, the longer its light has taken to reach us and so the earlier in cosmic history we will see it. By observing billions of galaxies out to a distance of 10 billion light-years, scientists will be able to chart the position and velocity of galaxies over immense distances and through most of cosmic history, and trace the way the Universe has expanded during that time. Euclid’s extraordinary optics will also reveal subtle distortions in the appearance of galaxies.

From this wealth of new data, astronomers will be able to infer the properties of dark energy and dark matter more precisely than ever before. This will help theorists pin down the nature of these mysterious components and develop a refined understanding of how gravity behaves at the largest distances.

Really impressive, and yet a bit unsettling for me.

Not only DNA, but your sense of taste also depends on you health, early eating habits and how used you are to certain substances.

Does it? What about you, guys? Sitting, standing, or why even bother getting out of bed? Do you care to stop your truck before pee to the bottle? Does your boss let you walk away from the cash desk?

The remarkable concurrence of three dramatic climate events:

1. Antarctic sea ice extent now over 2 million kilometers below the 1991-2020 mean
2. global 2-meter surface temperatures breached the 1.5°C barrier for the third consecutive day
3. WTF is happening to the world’s oceans, and in particular the North Atlantic? Ocean temperatures have been setting unprecedented daily records, spiking to highs that are shocking climate scientists, as they look for possible reasons.

Once spotted in 1978 and thought to have gone extinct, the Fujian Bamboo Salamander has been found again. According to DNA analysis, this cannibalistic species has an average or above average rate of genetic divergence compared to other salamander species. They also have been witnessed vocalizing, which isn't something salamanders usually do.

Another source article here from the Miami Herald.

Stress can override natural satiety cues to drive more food intake and boost cravings for sweets.