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Blanet: A new class of planet that could form around black holes

The dust clouds around supermassive black holes are the perfect breeding ground for an exotic new type of planet.

Blanets are fundamentally similar to planets; they have enough mass to be rounded by their own gravity, but are not massive enough to start thermonuclear fusion, just like planets that orbit stars. In 2019, a team of astronomers and exoplanetologists showed that there is a safe zone around a supermassive black hole that could harbor thousands of blanets in orbit around it.

The generally agreed theory of planet formation is that it occurs in the protoplanetary disk of gas and dust around young stars. When dust particles collide, they stick together to form larger clumps that sweep up more dust as they orbit the star. Eventually, these clumps grow large enough to become planets.

A similar process should occur around supermassive black holes. These are surrounded by huge clouds of dust and gas that bear some similarities to the protoplanetary disks around young stars. As the cloud orbits the black hole, dust particles should collide and stick together forming larger clumps that eventually become blanets.

The scale of this process is vast compared to conventional planet formation. Supermassive black holes are huge, at least a hundred thousand times the mass of our Sun. But ice particles can only form where it is cool enough for volatile compounds to condense.

This turns out to be around 100 trillion kilometers from the black hole itself, in an orbit that takes about a million years to complete. Birthdays on blanets would be few and far between!

An important limitation is the relative velocity of the dust particles in the cloud. Slow moving particles can collide and stick together, but fast-moving ones would constantly break apart in high-speed collisions. Wada and co calculated that this critical velocity must be less than about 80 meters per second.

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40 Examples of Self Abandonment 🤕👎💭💔

Self-abandonment means not taking care of yourself, your needs, and your feelings. It's like ignoring what's good for you and not being kind to yourself normally in a way that benefits everyone but you.

Not eating well or exercising.

Pretending to be happy when you're not.

Working too much without breaks.

Staying in a bad relationship.

Letting people use you.

Forgetting about things you enjoy.

Not saying what you want.

Always doing things for others.

Not asking for help when you're sad or stressed.

Being alone when you need friends.

Saying mean things to yourself in your head.

Giving up your dreams for others.

Avoiding problems instead of solving them.

Never taking time to relax.

Ignoring how you look or feel.

Not asking for help when things are too hard.

Trying to be perfect all the time.

Doing things that hurt you, like drugs or danger.

Changing who you are to fit in.

Not being yourself and doing what others want.

Ignoring your body when it needs rest or sleep.

Letting others make decisions for you all the time.

Keeping your feelings bottled up inside.

Surrounding yourself with people who bring you down.

Not pursuing your interests or hobbies.

Saying "yes" to everything, even when you're overwhelmed.

Putting up with disrespect or mistreatment from others.

Not giving yourself credit for your accomplishments.

Skipping important appointments or check-ups.

Holding onto grudges and negative emotions.

Comparing yourself unfavorably to others.

Not taking breaks when you're stressed.

Neglecting your financial well-being and overspending.

Ignoring signs of burnout or exhaustion.

Avoiding seeking help for mental health struggles.

Ignoring your own intuition and gut feelings.

Overcommitting and spreading yourself too thin.

Constantly seeking validation from others.

Letting fear hold you back from trying new things.

Dwelling on past mistakes and not forgiving yourself.

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Rest in Power Sacheen Littlefeather and may your memory always be a blessing

Clouded leopard (Neofelis nebulosa) 

Photo by Vincent J. Musi