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We are an international team led by the Max Planck Institute for extraterrestrial physics (MPE) in Garching, Germany, in conjunction with collaborators around the world, at the Paris Observatory-PSL, the Universite Grenoble Alpes, CNRS, the Max Planck Institute for Astronomy, the University of Cologne, the Portuguese CENTRA - Centro de Astroﬁsica e Gravitacao and ESO.
Our observations are the culmination of a 26-year series of ever-more-precise observations of the centre of the Milky Way using ESO instruments. The observations have for the first time revealed the effects predicted by Einstein's general relativity on the motion of a star passing through the extreme gravitational field near the supermassive black hole in the centre of the Milky Way. You can read more details about the discovery here: ESO Science Release
Several of the astronomers on the team will be available starting 18:30 CEST (12:30 ET, 17:30 UT). We will use the ESO account* to answer your questions. Ask Us Anything!
*ESO facilitates this session, but the answers provided during this session are the responsibility of the scientists.
Sub-question: is there measureable phototropism behavior towards starlight, if any?
I recently planted pea and was wondering if seeds have some kind of gyroscope or gravity sensor to determine in which way they must grow roots and stem. In case of "on the ground" it would be easy to guess that there are some chemicals which reacts in the contact spot with the soil, but underground there is soil everywhere.
Below is an article about a possible discovery of a particle responsible for soem kind of new force (?).
Article date is at about 2016 and says that in a year some other labs would come with confirmation or not.
I'm not sure how to find this out but has there been any development and if possibly what exactly could this 5th force be responsible for?
Thank you very much.
According to Einstein, gravity has influence on space and time. Does magnetic field have influence on time and space? Does electric field have influence on time and space?
For context, the lowest temperature ever recorded on earth was apparently -133.6F (-92C) by satellite in Antarctica. The lowest confirmed air temperature on the ground was -129F (-89C). Wiki link to sources.
So it seems that it's already possible for air temperatures to fall below the freezing point of carbon dioxide, so in these cases, would atmospheric CO2 have been freezing and snowing down at these times?
Thanks for any input!
They sell converter disks, but I’m wondering if I could just use magnets.
What you say you science folk?
As far as I know, gasoline’s volume varies with temperature and air pressure, much like pretty much everything else. So why do we buy gas and measure fuel efficiency by volume rather than by mass?
The question that I want to ask is actually broader than the one in the title. Do all the interactions that the fundamental force of electromagnetism regulates have a frequency? If not,then how can the photons responsible for the force be emitted without a frequency? I'm sorry if this is somehow a stupid question
I ask because i had a drink tonight and after getting up to use the bathroom. I felt my heart rate slow down and my fitbit recorded it to be 25 to 30... i felt light headed and very dizzy. I had one drink lol
Nihonium was first synthesized in 2003. Moscovium was first synthesized in 2003. Tennessine's synthesis was first announced in 2010. Oganesson was first synthesized in 2002.
They were given their present names in 2016. Why did the names take so long?
Hello to all,
my collegue recently came up with really interesting questions, which certainly seems like two chemical engineers should know by default, but we couldn't come up with definite answer...
so here it is, when Bernoullis equasion applies to Venturi's pipe, it says that when fluid flows throught narrower area its speed increase but pressure drops...but when it goes to wider area again, speed decreases and pressure increases.
If this is applied to heat exchanger ( with situation where there is some fouling in pipes of HE ), why doesn't pressure goes up again when fluid exits heat exchanger system into normal pipe again?
EDIT: in other words, shouldn't principle be the same in Venturi's pipe and pipe's in heat exchanger with some fouling?
Thank you very much
I'd curious about the most accurate primary source regarding such data & calculations, thanks.
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