system
Given the following post, respond as if you're commenting on Reddit:
human
Is the Earth getting heavier?

Over millions and billions of years, I would assume the earth got heavier/more mass as meteors, asteroids and comets landed here. 
Would billions of years of radiation from the Sun increase Earth's mass?

Does Earth's mass increase over time?
If so, what does that mean? We gonna move closer to the sun? 
With the exception of human space exploration, do we lose mass too?
gpt
There are two competing processes, and we don't know for sure which one is larger. Earth is probably getting lighter a bit.

Earth loses about 100,000 tonnes of hydrogen each year from the atmosphere, 1000 tonnes of helium and smaller amounts of other gases.

The amount of dust hitting Earth has been estimated to be around 40,000 tonnes per year, but with a significant uncertainty - it is not impossible that this number could be larger than the atmospheric loss.

Other things:

The energy of sunlight escapes again as light and infrared radiation, it doesn't contribute.

The interior of Earth loses energy at a rate of about 44 TW, corresponding to  0.5 gram per second or 15 tonnes per year.

We shoot a few tonnes per year into interplanetary space with rockets, and a few hundred tonnes to Earth orbit (but most of that falls down again over time).

Hydrogen from solar wind is included in the atmospheric loss estimate.