Near-Earth Asteroid Flyby

Asteroid 2017 FE1 was first observed by Mt. Lemmon Survey on 2017-03-18

It will fly by Earth harmlessly on 2017-06-16 at 22:16 UTC at 39.9 times the distance to the Moon, at a speed (relative to the Earth) of 10.6 km/s.

It is estimated to be 164 – 518 meters in size.
#space#science#Astronomy#astrophysics#asteroids#NEO near Earth objects#physics

Could a rogue planet possibly develop intelligent life?

Nobody has ever given an intelligent answer to what is intelligent life, but to simplify, yes, life itself could develop on a rogue planet. It might be a microbe or something greater, but we know here on Earth, deep below in the Alone_in_Space_-_Astronomers_Find_New_Kind_of_Planetoceans where no sunlight reaches, there are forms of life that live and thrive due to the heat of volcanic tubes erupting.

Life needs energy. It doesn’t always have to get that energy from the sun. There must, however, at least be some heat.

Is it possible to prove that we are not aliens on Earth?

The answer is yes.

It’s already proven. The nearest possible candidate for life other than microbes is 40 light years away. Traveling at the fastest speed ever achieved it would take over 3000 years to reach that distance.

So that proves we are not aliens, we’ve never been visited by aliens, and we will never be able to visit other stars to know if there are aliens.

Are there planets that do not orbit any star?

Alone_in_Space_-_Astronomers_Find_New_Kind_of_PlanetYup. They’re called rogue planets. Rogue planets became dislodged from their solar system and wander through space. They’re lifeless of course. No heat or energy from the star they escaped. They’re out there. Wandering in space.

What would happen to the rest of the planets if Uranus changed places with Mars and Pluto swapped with Jupiter?

On this planet there would be total chaos in the classroom. Books would have to be rewritten.

Scientists would be busy figuring out how this happened when it should not be able to happen. It would be on the nightly news with Lester Holt.

Donald Trump would blame it on Democrats.

Immediately on Earth we would see no change except in conspiracy theories.

If you were in a spacecraft traveling between galaxies, how would you measure your velocity?

Velocity is relative, as is everything in the universe. Relative to Earth? Relative to a nearby galaxy?

In space you are standing still. You are not moving at all.

If you see a galaxy over there you want to head toward, you apply some acceleration and over several million years it starts to get closer to you.

But your speed and your time to you always remains constant.