Because these stellar streams respond to gravity, they can act as tracers of dark matter that cannot be seen directly. Until recently, their extreme faintness made them very difficult to detect and analyze. Improvements in massive astronomical datasets and advanced analysis methods are now turning stellar streams into one of the most promising tools for studying galaxies. First Stellar Stream Found Beyond the Milky Way An international team led by PhD student Julie Kiel Holm of the Niels Bohr Institute and Associate Professor Sarah Pearson of DTU Space has now reported a first-of-its-kind discovery. The results were published in Nature, one of the world's most prestigious scientific journals. "We have discovered a globular cluster stellar stream in another galaxy. This is the first time such a stream has been observed outside our own galaxy, the Milky Way, which makes the discovery particularly exciting," says Julie Kiel Holm. Finding this kind of structure beyond the Milky Way is especially difficult because the stellar stream itself produces such a weak signal. The newly detected stream is also located inside an ultra-diffuse galaxy, a type of galaxy that gives off very little light. That combination makes the detection particularly striking. "This opens entirely...

Riccardo Maffioli from Albizzate, Varese, Italy The Soap Bubble Nebula (PN G75.5+1.7 or PN Ju 1), a little-studied planetary nebula in Cygnus near the better-known Crescent Nebula, is the shell cast off by a dying Sun-like star. Its near-perfect sphere, roughly 4′ across was only discovered in 2008; its faintness and position against other emissionContinue reading "A bubble adrift"

Available now for pre-order. Please note that all orders will be despatched after the publication date.  As it came closer Dick felt that shuddering faintness, which often affected him in the presence...

Australian experts say a new global definition of what a heart attack is will help improve the diagnosis of women and lead to better outcomes. Here's what's changed.

My apologies for the faintness of the recording. My headset failed me. Thus this one is free. Eugenics. An ugly word for an ugly practice.

The story of spaceflight told through missions and programs that did not happen - that is, the great majority of them.

Dizziness is a broad term that can describe light-headedness, feeling off-balance, faintness, or a spinning sensation called vertigo. The cause is often minor, but some causes need medical attention. (National Health Service , n.d.; MedlinePlus, n.d.) What causes it or increases the risk? dehydration a sudden fall in blood pressure when standing inner-ear problems migraine low blood sugar iron-deficiency anaemia stress or anxiety side effects of medicines less commonly, heart rhythm problems or stroke Common signs and symptoms light-headedness feeling unsteady spinning or movement when still nausea ringing in the ears or hearing changes with some inner-ear causes…

The Sun's faintness at Mars' orbit makes producing energy, melting ice, and staying warm more difficult. Orbiting solar reflectors (OSRs) can augment sunlight at Mars, but the area of OSRs needed to d...

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