Tardigrades: ‘Water Bears’ Stuck On The Moon After Crash 

Carina Nebula Rosette Nebula Heart Nebula Fairy Pillar Nebula Orion Nebula Eagle Nebula Flame Vista Nebula Crab Nebula 

is there anything you can tell us to expand on the space time ripples found in simulated black hole collisions?

Hi!

In one of my other responses I explained the whole concept of space time, here’s how i explained that:

A way that you can picture the bending of space time is this:

Picture two chairs, the backs facing each other. Then tape one end of a blanket to one of the chair backs and the other end of the blanket to the other chair back. What you have now should like this:

Now, if you were to place a tennis ball somewhere on the light blue blanket (top blanket), that blanket would no longer be flat, there would be a bend or a curve in it. Let’s say you put a basketball on the top blanket instead of a tennis ball. Since the basketball is bigger, the bend/curve that it makes will be a lot bigger than the tennis ball’s because the basketball has more mass.

So that blue blanket at the top of the chairs represents space time. If there were to be two large objects, let’s say basketballs, that were to “collide” (representing two black holes). Since they’re so large, they’d create these ripples in the blanket that can be observed.

Another easier way to think about it is like dropping a pebble into a lake. The bigger the pebble, the stronger and more frequent the ripples are. So since black holes are very massive, they create larger ripples compared to something smaller!

Astronomers haven’t been able to directly observe these ripples in space time, they were theorized by Einstein, however there’s an announcement being made all over the world today about data obtained from the Laser Interferometer Gravitational-Wave Observatory (LIGO)!

Here is a link talking a bit about that press conference!

I hope that helped to clarify everything! If not, feel free to ask again and I’ll try my best to clarify!

UPDATE: HERE are the findings of the conference, they’ve detected them for the first time!

July 22 2015: my art making and study space

Dirty thunderstorm

A dirty thunderstorm (also volcanic lightning, thunder volcano) is a weather phenomenon that is related to the production of lightning in a volcanic plume.

A study in the journal Science indicated that electrical charges are generated when rock fragments, ash, and ice particles in a volcanic plume collide and produce static charges, just as ice particles collide in regular thunderstorms.

Volcanic eruptions are sometimes accompanied by flashes of lightning. However, this lightning doesn’t descend from storm clouds in the sky. It is generated within the ash cloud spewing from the volcano, in a process called charge separation.

source

images

WOW!!

This computer-simulated image shows a supermassive black hole at the core of a galaxy. The black region in the center represents the black hole’s event horizon, where no light can escape the massive object’s gravitational grip. The black hole’s powerful gravity distorts space around it like a funhouse mirror. Light from background stars is stretched and smeared as the stars skim by the black hole.

Credits: NASA, ESA, and D. Coe, J. Anderson, and R. van der Marel (STScI)

Full Story at Hubble Space Telescope/NASA.- Behemoth Black Hole Found in an Unlikely Place

High-res images at HubbleSite.org

A section of Hubble’s sharpest view of the Andromeda galaxy to date, taken last year.

source

Which U.S. state has banned some sunscreens from 2021, and why? ☀️ Find out in this month’s edition of #PeriodicGraphics in C&EN: https://ift.tt/2jSN4jl https://ift.tt/2JWdZ71

I’ve been receiving tonnes of questions on Note - Taking recently, so I’d thought I make a post. Plus, I had fun making these graphics.

There are three different methods that I prefer when it comes to note taking:

Notes written During the Lecture

I highly recommend taking notes during the lecture.

I also use abbreviations for quicker and more efficient note taking. Some examples of abbreviation that I use are:

w/ - With

w/o - Without

e.g. - For example

Notes written After the Lecture

As for notes written after the lecture, I tend to seek the help of Google Spreadsheets or Microsoft Excel. This way I am able to organise information learnt. I do this by dividing the information provided into two columns, one for keywords or questions and the other for definitions and answers. 

*Note: This method was adapted from the note taking method I’ve used during college. 

Rewritten Notes

I also rewrite my notes. My rewritten notes are arranged based on the order they appear in the syllabus unless there are pieces of information that are related to more than one topic.

I use a black pen or pencil for my written notes, as well as coloured pens and highlighters to highlight the key words and terminologies for emphasise.

Before writing them down, I tend to visualise the layout - alternating between words and pictures/diagram. This definitely helps me with remembering for exams. All I have to do is imagine that I’m looking at that page and I can remember where everything is.

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Please click on the images for a much clearer view. 

Well, that’s all from me! I hope that you found this information helpful. And, don’t hesitate to ask me questions if you’re confused about this method of note-taking, or any other problems you might have. For more information of how to survive university, follow this page. And, for more medical school chronicles, follow me on IG. Follow my studygram/medgram for more content. 

MARTIAN STORMS - Seen in 1977 by the Viking 2 Orbiter

“Like its predecessor, the Viking 2 mission consisted of a lander and an orbiter designed to take high-resolution images, and study the Martian surface and atmosphere. Both the Viking 1 and 2 landers benefited greatly from their orbiting counterparts, which snapped images that helped mission controllers navigate the landers to safe landing sites.”

This particular image was taken by the Viking 2 Orbiter and shows a massive dust storm on the red planet. This spectacular storm can be seen on a global scale. The Viking 2 mission would end 3 years later on April 11, 1980.

Credit: NASA/JPL

Could dark energy be caused by frozen neutrinos?

“Since its discovery in 1998, the accelerated expansion has lacked a compelling, simple explanation that didn’t hypothesize a completely new set of forces, properties or interactions. If you wanted a scalar field — a quintessence model — it had to be finely tuned. But in a very clever paper just submitted yesterday by Fergus Simpson, Raul Jimenez, Carlos Pena-Garay, and Licia Verde, they note that if a generic scalar field couples to the neutrinos we have in our Universe, that fine-tuning goes away, and that scalar field will automatically begin behaving as a cosmological constant: as energy inherent to space itself.”

The accelerated expansion of our Universe was one of the biggest surprise discoveries of all-time, and something that still lacks a good physical explanation. While many models of dark energy exist, it remains a completely phenomenological study: everything appears consistent with a cosmological constant, but nothing appears to be a good motivator for why the Universe should have one. Until now, that is! In a new paper by Fergus Simpson, Raul Jimenez, Carlos Pena-Garay and Licia Verde, they note that any generic scalar field that couples to the neutrino sector would dynamically and stably give rise to a type of dark energy that’s indistinguishable from what we’ve observed. The huge advance is that this scenario doesn’t require any fine-tuning, thanks to this dark energy arising from neutrinos “freezing,” or becoming non-relativistic. In addition, there are experimental signatures to look for to confirm it, too, in the form of neutrinoless double-beta decay!