Stars
The Solar system
Random Space
Galaxies and the early Universe
Black Holes
350

The smallest stars

Red Dwarfs, M type stars (based on stellar classification)

350

The first planet from the sun:

Mercury, also the smallest

350

The Earth is big?

No, it is small compared to even a planet in the solar system

350

The galaxy we live in is:

The Milky Way Galaxy!

350

The smallest black hole possible based on theory is

A primordial black hole, a black hole with the mass of an average mountain, but the size of a proton!

750

The sun's diameter is:

1,392,700 km Other answers:1.3 Million km,1.39 million, 1.392 million, 1.3927 million

750

The largest planet is:

Jupiter!

750

The percent of the mass of the solar system is made up by the sun=

99.86% of all of the solar system's mass.

750

There are ___ at the core of galaxies

Supermassive or ULTRAMASSIVE black holes

750

How black holes form?

Compress anything to a certain size, it will transform (ex: the Earth would have to be compressed to the size of a coin to transform).

1000

The closest star to Earth is ___ at ___ light-years.

Proxima Centauri, 4.54 light-years.

1000

The dwarf planets are:

Ceres, Pluto, Haumea, Makemake,and Eris.

1000

The most massive object to exist is:

The Observable Universe itself!

1000

What are the most massive stars to ever exist?

Quasi-Stars/Black hole stars.

1000

Name all the types of black holes:

Primordial, Stellar, Supermassive, ULTRAMASSIVE!

1500

The largest Main-Sequence star is:

R136a1: A blue star about 300x the mass of the sun.

1500

What is beyond the Kuiper Belt?

A place of mostly empty space, called the Scattered Disk.

1500

Will black holes ever die?

Yes! They will, but it will take about 1010 to the power 29 years.

1500

What happens when a Quasi-Star forms?

The core of the star collapses into a black hole and a powerful shockwave rips through the universe.

1500

The largest black hole is:

TON 618 or a newly discovered black hole called Phoenix A*

2750

What is the largest star in the universe?

Stepheson 2-18 is a red hypergiant, the largest star in the universe, at 2150x the sun's size.

2750

Where is the end of the solar system?

That would be about 3500 AU away from the sun, at the possibly existing Oort Cloud.

2750

Is life rare in the universe?

We don't know. We do not have the technology yet to find this answer.

2750

What created the Universe?

The best possible theory states that the Universe started as a singularity and then exploded and our universe was created.

2750

What is the highest known mass of any black hole?

66 billion x the Sun is the highest known mass set by TON 618. But, another black hole might dethrone TON 618 as the biggest object in the universe.