BC LIFE
Saved by @Mollyycolllinss

One of my favourite parts of AAS meetings is attending plenaries way out of my subfield. Pleased to be able to still do that virtually #AAS237 -in "Comets, Unseen Planets, and the Outer Fringes of the Solar System", by Scott Tremaine.

 I never thought about how comet brightness depends on distance^4 - 2 powers from the Sun to the comet, and 2 powers back to us on Earth.
Short period comets (P<20 yrs) are mostly found in/near the plane of the Solar system, while long period comets come from a roughly spherical blob around the Sun. Cool.
I enjoyed the G=M=1 explanation of Orbital Energy = 1 for the Earth (in theorist units!).
Cool - Tremaine explaining that the existence of the Oort cloud (as a set of comets bound to the Sun by gravity) rules out some alternative models of gravity! I love things like that.
Models suggest about an Earth mass of comets in the Oort cloud. That's a nice neat number.
Tremaine: the comets in the Oort cloud likely started in the disc of the solar system as left over material, and random walked out from kicks caused by interactions with planets (and eventually passing stars!).
Tremaine now talking about the discovery of Sedna in 2003 and how its existence suggests there must have been large planetary sized objects in the early Solar System, which no longer exist.
There should have been many Mars mass bodies, several Earth mass, and even some in the mass gap between Earth and the gas giants! Cool.
These objects may have gradually moved outwards rather than being completely removed from the Solar system. Tremaine now discussing what impact dark Earth mass planets in the outer Solar system would have.
Tremaine comparing this model to observations of the Oort cloud. Suggests it is likely (but not definite) there is a sub-Earth mass object in the outer Solar System. A possible "Planet X"
So we now get a history of suggestions of "Planet X's" and how they are currently scoring against the evidence.
IR surveys have ruled out planets of Jupiter or Saturn mass within 80,000 or 30,000 AU respectively.....
However Earth mass sized planets are harder to detect.... the @VRubinObs will be awesome - but not all sky. Some CMB experiments can provide constraints.
Even pulsar timing can provide constraints on Earth mass planets in the outer solar system. A nice side project for @NANOGrav :)
Tremaine concludes that these methods might detect a possible "Planet X" but could not rule out an Earth mass object in the Oort cloud completely.
Tremaine ending with the @xkcdComic summary of "Planet X" constraints.
Just to reflect that it's kind of awesome that there could still be undiscovered planets in our own Solar System... really bringing home to me how much more there is to learn and do in astronomy.

More from Life

Trader knight
Trader knight
@Traderknight007
FEAR - It’s the re-experience of failure in advance.

Many traders face the issue of Not entering in trades because of fear.

A thread on How to pull the trigger when the opportunity knocks.


Lets First start from knowing the cause of this "FEAR" of pulling the trigger.

A traders goes through many phases before becoming Profitable.

The first phase is the " APUN HI BHAGWAN HAI" phase-

When we first begin Trading, we don’t know any concepts, we don’t know about the risks , the dangers.

So we start trading, and like most guys by beginners luck we start making good, we start to calculate how much money we will make in next 1yr, 5 yrs, Greed start to Hop in.


We get introduced to Various instruments, F&O, LEVERAGE.

We take big positions as we don’t have any FEAR cause we haven't seen those bad phases yet.

Now we get the Big blow, account down -50%, or in many cases wiped out.

The first phase ends here.


Now we know How the market can kick our ass, we now know the risk that comes with those big positions.

"THE LEARNING PHASE"-

Now we know that we were just lucky initially and now we have to learn why we get those losses, so we start learning concepts , fundamental, Technicals.
TRADING , LIFE
Ankur Warikoo
Ankur Warikoo
@warikoo
20 lies that the world feeds us everyday

A thread...

Lie 1:
If you don't settle in your 20s, you are gone!
This is the decade.
You don't get another chance.
Study fast, get a job, get married, kids, that car, that house.
Quickly!
Time's running.
Look at everyone else doing it!

Lie 2:
People who are poor are lazy.
People who are rich are hardworking.
It is your fault if you haven't made it in life.
Look at everyone else who made it.
There is nothing granted or gifted in life.

Lie 3:
Those in corporate jobs, are unambitious.
They have sold their soul.
They are addicted to the salaries.
They could have done so much more with their life.
But they decided to spend it working for someone else.

Lie 4:
Starting your own business is the surest way of making money.
You can never get rich earning a salary.
You can never get rich working for someone else.
LIFE
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Kab
Kab
@Kabamur_Taygeta
#NEIOH

1. Friends Of The Great Planet Earth!

Everything You Seek Is Already Within You!  Each Waking Dream Has False Teachings That  Say There Is A Special Place 'Out There' In The Skies Where People Go That Follow A Certain Doctrine.

2. And Those Same Teachers Explain There Is A Place Of Torment For Others That Arrived On A Different Part Of The Planet And Were Taught A Different Doctrine.

There Is ONE Creator That Has Been Named By Many. It Would Be Loving To Honor And Respect Another's Beliefs,

3. As In Truth, Many Have Lived In Multiple Cultures With Many Beliefs That Now Are Judged! Incarnating Over And Over Is The Joy Of The Soul Experiencing Life! The Soul Fully Understands This Is A Human Experience.

4. Wouldn't It Be Much More Relaxing And Fun To Allow Others Their Freedom, Just As You Want Yours?  Yes Indeed!  Relax And Flow!

Since The Very Beginning Of Your Self-Awareness As An Incarnate Being, You Have Probed Your World For Clues To The Meaning Of Your Existence.

5. You Have Looked In Every Conceivable Crevice And Pondered The Vastness Of The Infinite Cosmos. You Have Scrutinized The Spiritual Wisdom That Was Forthcoming From Those Who Believed Themselves To Be Knowledgeable About Such Matters.
LIFE
GREG ISENBERG
GREG ISENBERG
@gregisenberg
When I was 17, I was in a school shooting. It was traumatic

I'm convinced that overcoming fear is the secret to winning at startups, business and life:

Here's some tips and lessons on overcoming FEAR:

The greatest productivity tip of all time:

It isn't to drink coffee or get 8 hours of sleep or use Notion

It is conquering your fears. Period.

Life is too short for fears

"Adjusted for the subjective increase in how fast time passes, life is half over by 23 or 24. Don't waste time."
h/t @samaltman

Time is ticking

Beat your "amygdala"

Amygdala = the part of your brain that registers all your fear

When you have an experience that creates fear, it gets "coded" into your brain

For the rest of your life, your amygdala, is tainted with your past experience

Arm wrestle your amygdala and win

Rejection sucks. But it's one of the most useful ways to refine your craft

Mindset shift: use fear to learn & motivate, not run away & demotivate
LIFE
ACLU Massachusetts
ACLU Massachusetts
@ACLU_Mass
Today is a day to celebrate love in our lives.

And here at ACLU-MA, we know that justice is a labor of love. Here are some of our favorite moments of love and justice in the last year, to brighten your #ValentinesDay.

💞👇💞

Almost exactly a year ago, our clients Hanz and Maudy were reunited after being separated by the cruel "Return to Mexico" policy.
LIFE

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Anu Satheesh \U0001f1ee\U0001f1f3
Anu Satheesh 🇮🇳...
@AnuSatheesh5
Thuravoor Narasimha Swamy Temple
Alappuzha, Kerala
#KeralaTemples 🚩

Thuravoor Narasimha Swamy or Thuravoor Mahakshetram is situated in Alappuzha with Narasimha Swamy and Sudharshana Moorthy as main Prathishta.
Temple has separate Sannidhi for Vadakkanappan ( Narasimha) and 👇


Tekkanappan ( Sudarshana).

Sthala puranam says that Vigraham of Narasimha was brought from Varanasi. Swami Padmapadar, shishya of Adi Sankaracharya, had worshipped the same Vigraham at Kashi.
A Namboodiri, on his way to Kashi saw a powerful light which disappeared here 👇


Namboodiri dug the place and he found a beautiful beautiful Vigraham made of Anjanasila. It is said that the vigraham occupied a site, which was the place of Durga Devi
Sudarshana Moorthy is about 6 Ft, Chaturbahu. Deepavali is famous festival here.
Om Narasimha Swamine Namah
🕉
ALL
foone
foone
@Foone
So there's a class of puzzles called "river crossing puzzles" which involve having to cross a river on a boat/bridge containing some set of individuals/items with restrictions on which ones can be on the boat/left on each shore, right?

and the most common subclass of these problems is the one where you have 3 items/animals to cross with.
This is alternatively called the "fox, goose, and bag of beans" or "wolf, goat, and cabbage" puzzle.

the idea is that your boat can only carry one item at a time, but if you leave the wolf/fox unattended with the goat/goose, the wolf/fox will eat the goat/goose.
and similarly, the goose/goat will eat the beans/cabbage if left alone

so you have to set up a set of actions that never leaves either side of the river in one of the lose-states.

the solution to this variant being:
1. take the goat/goose over
2. return empty
3. take the wolf/fox over
4. return with the goat/goose
5. take the cabbage/beans over
6. return empty
7. take the goat/goose over
GAMES
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Vibhu Vashisth
Vibhu Vashisth
@VIBHU_Tweet
शमशान में जब महर्षि दधीचि के मांसपिंड का दाह संस्कार हो रहा था तो उनकी पत्नी अपने पति का वियोग सहन नहीं कर पायी और पास में ही स्थित विशाल पीपल वृक्ष के कोटर में अपने तीन वर्ष के बालक को रख के स्वयं चिता पे बैठ कर सती हो गयी ।इस प्रकार ऋषी दधीचि और उनकी पत्नी की मुक्ति हो गयी।


परन्तु पीपल के कोटर में रखा बालक भूख प्यास से तड़पने लगा। जब कुछ नहीं मिला तो वो कोटर में पड़े पीपल के गोदों (फल) को खाकर बड़ा होने लगा। कालान्तर में पीपल के फलों और पत्तों को खाकर बालक का जीवन किसी प्रकार सुरक्षित रहा।

एक दिन देवर्षि नारद वहां से गुजर रहे थे ।नारद ने पीपल के कोटर में बालक को देख कर उसका परिचय मांगा -
नारद बोले - बालक तुम कौन हो?
बालक - यही तो मैं भी जानना चहता हूँ ।
नारद - तुम्हारे जनक कौन हैं?
बालक - यही तो मैं भी जानना चाहता हूँ ।

तब नारद ने आँखें बन्द कर ध्यान लगाया ।


तत्पश्चात आश्चर्यचकित हो कर बालक को बताया कि 'हे बालक! तुम महान दानी महर्षि दधीचि के पुत्र हो । तुम्हारे पिता की अस्थियों का वज्रास्त्र बनाकर ही देवताओं ने असुरों पर विजय पायी थी।तुम्हारे पिता की मृत्यु मात्र 31 वर्ष की वय में ही हो गयी थी'।

बालक - मेरे पिता की अकाल मृत्यु का क्या कारण था?
नारद - तुम्हारे पिता पर शनिदेव की महादशा थी।
बालक - मेरे उपर आयी विपत्ति का कारण क्या था?
नारद - शनिदेव की महादशा।
इतना बताकर देवर्षि नारद ने पीपल के पत्तों और गोदों को खाकर बड़े हुए उस बालक का नाम पिप्पलाद रखा और उसे दीक्षित किया।
ALL
Jaya_Upadhyaya
Jaya_Upadhyaya
@Jayalko1
KANIPAKAM VINAYAKA, CHITOOR (AP)
#bharatmandir

Kani means wetland and Pakam means flow of water into wetland.
Kanipakam Vinayaka is swayambhu (self-manifested). The murti is in a well which is always full of water.


Once, there were three brothers. Each one had a handicap- Dumb, Deaf and Blind. They had a small piece of land for livelihood. For their field, they drew water from a well. One day, they found that the well had dried up so one of them started digging in the well.


His tool hit something and blood oozed out. They found a swayambhu murti of Ganesha here.
Villagers started offering coconut water which overflew into a channel. Hence the name Kanipakam.


The murti is still growing in size. At present, we see the knees and the abdomen only. The Kavacham (Armour) offered to Vinayaka 50 years ago doesn’t fit today.
Vinayaka is believed to be the upholder of truth. So people come here and swear before him to prove their innocence.
ALL
Vibhor Varshney
Vibhor Varshney
@nakulvibhor
On the occasion of youtube 20k and Twitter 70k members

A small tribute/gift to members

Screeners

technical screeners - intraday and positional both

before proceeding - i have helped you , can i ask you so that it can help someone else too

thank you

positional one

run - find #stock - draw chart - find levels

1- Stocks closing daily 2% up from 5 days
https://t.co/gTZrYY3Nht

2- Weekly breakout
https://t.co/1f4ahEolYB

3- Breakouts in short term
https://t.co/BI4h0CdgO2

4- Bullish from last 5

intraday screeners

5- 15 minute Stock Breakouts
https://t.co/9eAo82iuNv

6- Intraday Buying seen in the past 15 minutes
https://t.co/XqAJKhLB5G

7- Stocks trading near day's high on 5 min chart with volume BO intraday
https://t.co/flHmm6QXmo

Thank you
SCREENERS , ALL , NAKULSMIX