# Can Moon see your flashlight?

Yes. If there is nothing opaque in the way to obstruct it, it will reach the moon. However, the intensity of light (from a point source like a torch) diminishes with the square of distance. So, by the time it reaches the moon, it will be extremely faint.

## How long does it take for a flashlight to reach the moon?

It will take three months for Lunar Flashlight to reach the moon, taking a roundabout journey to conserve the limited fuel it can carry.

## Can a flashlight push you in space?

Yes. Photons have momentum and momentum is conserved. Accordingly, the flashlight would experience a thrust in the opposite direction.

## What happens if you shine a flashlight in space?

Your flashlight is so puny that most light will be scattered in the atmosphere. If you were to shine it in space, in basically any direction, it will travel 'forever'.

## How far can a flashlight be seen?

Light intensity of a flashlight and the ANSI norm

The intensity is in this case enough to clearly see what you are lighting up. For a flashlight with a beam distance of 300 metres, this is approx. 75 metres. And for a flashlight with a beam distance of 800 metres this is 200 metres.

## Can you see light from space?

Astronomers can see light from distant objects even more clearly now because of the Hubble Space Telescope, a powerful instrument that has a great vantage point in space. In fact, it has been said that the Hubble can detect the light from a match on Pluto!

## How far light can travel in space?

Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.

## What Cannot go in the space?

Common items like salt and bread are banned from the International Space Station due to fears that they’ll send floating pieces everywhere and potentially damage space equipment or accidentally get inhaled by astronauts. Basic eating, sleeping, and showering habits must also be modified.

## Can someone hear you in space?

Sound is a mecanical wave, which means that it needs substance to travel through, such as air or water. In space, there is no air, so sound has nothing to travel through.

## Can you get burnt in space?

Ultraviolet (UV) radiation from the sun is largely absorbed by the Earth’s atmosphere and never reaches its surface, but a human unprotected in space would suffer sunburn from UV radiation within seconds.

## Can a laser fire in space?

A: The light from a laser in space would continue on forever unless it hit something. However, if you were far enough away, you wouldn’t be able to detect the light. A projectile would also continue on forever unless it hit something.

## Can a light reach the moon?

Yes. If there is nothing opaque in the way to obstruct it, it will reach the moon. However, the intensity of light (from a point source like a torch) diminishes with the square of distance. So, by the time it reaches the moon, it will be extremely faint.

## Can you light a match on the moon?

“The fuel and oxidizer in a match head would cause the tip to burn, but not for long because of lack of oxygen.” And in the moon’s complete lack of atmosphere, a match cannot ignite at all — explanation enough for why Neil Armstrong didn’t celebrate his step onto the lunar surface with a candlelight dinner.

## Is space completely silent?

In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. ‘Outer space’ begins about 100 km above the Earth, where the shell of air around our planet disappears.

## What does space smell like?

A succession of astronauts have described the smell as ‘… a rather pleasant metallic sensation … [like] … sweet-smelling welding fumes’, ‘burning metal’, ‘a distinct odour of ozone, an acrid smell’, ‘walnuts and brake pads’, ‘gunpowder’ and even ‘burnt almond cookie’.

## How many years is 1 light-year?

Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.

## How fast is the speed of dark?

Darkness travels at the speed of light. More accurately, darkness does not exist by itself as a unique physical entity, but is simply the absence of light. Any time you block out most of the light – for instance, by cupping your hands together – you get darkness.

## What is the rarest thing in space?

Only 1-in-10,000 galaxies fall into the rarest category of all: ring galaxies. With a dense core consisting of old stars, and a circular or elliptical ring consisting of bright, blue, young stars, the first ring was only discovered in 1950: Hoag’s object.

## Why can’t we cry in space?

Astronauts can’t cry the same in space as they do on Earth.

Your eyes make tears but they stick as a liquid ball. In fact, they sting a bit. So — space tears don’t shed.” Unless an astronaut wipes that water away, tears in space can form a giant clump that can break free of your eye, as The Atlantic explained.

## What happens if you yell in space?

In space, there is no air, so sound has nothing to travel through. If someone were to scream in space, the sound wouldn’t even leave their mouths.

## Would a body decompose in space?

In space we can assume that there would be no external organisms such as insects and fungi to break down the body, but we still carry plenty of bacteria with us. Left unchecked, these would rapidly multiply and cause putrefaction of a corpse on board the shuttle or the ISS.

## Will a laser go on forever?

The light from a laser in space would continue on forever unless it hit something. However, if you were far enough away, you wouldn’t be able to detect the light. A projectile would also continue on forever unless it hit something.

## Can we destroy an asteroid with laser?

It depends on the exact circumstances. If, say, a 100-meter-wide asteroid were found today on a collision course with Earth next week, directed energy would not be a viable solution as that would require a very large laser array that would be far bigger than an equally effective single-use impactor or explosive.

## How many light years can we go?

The light that travels the longest gets stretched by the greatest amount, and the object that emitted that light is now at a greater distance because the universe is expanding. We can see objects up to 46.1 billion light-years away precisely because of the expanding universe.

## Is there anything faster than light in space?

Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second). Only massless particles, including photons, which make up light, can travel at that speed. It’s impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

## Can fire burn in space?

Fires can’t start in space itself because there is no oxygen – or indeed anything else – in a vacuum. Yet inside the confines of spacecraft, and freed from gravity, flames behave in strange and beautiful ways. They burn at cooler temperatures, in unfamiliar shapes and are powered by unusual chemistry.