The NASA astronaut welcomed three new crew members to the International Space Station on the 50th anniversary of the Moon Landing. Astronauts Andrew Morgan from NASA, Russian cosmonaut Alexander Skvortsov and Luca Parmitano of the European Space Agency arrived at the ISS on Sunday, July 21. The three men flew to the space aboard a Russian Soyuz spacecraft, rendezvousing with the ISS 250 miles (402km above earth. In Mrs Koch's photos, the astronauts in their space capsule are nothing more than a small white blimp against the deep blue waters of our home planet.
Ms. Cook tweeted over the weekend: "View of our crewmates arriving at @Space_Station yesterday.
"What a tremendously special day to launch. Welcome home @AstroDrewMorgan, @astro_luca and Alexander! "
The newly arrived astronauts will reinforce the space over the coming six months under the banner of ISS Expedition 60.
At any one time, the ISS is equipped to house
NASA Space Station LIVE stream: Watch the International Space Station HERE
On Sunday, the astronauts docked and entered the ISS at 1
NASA said: "The arrival restores the station's crew complement to six."
"The Expedition 60 crew will spend more than six months conducting about 250 science investigations in fields such as biology, Earth science, human research, physical sciences and technology development.
"Work on the unique microgravity laboratory advances scientific knowledge and demonstrated new technologies, making research breakthroughs that will enab le long-duration human and robotic exploration of the Moon and Mars. "
READ MORE: These are the most breathtaking photographs of the Mars from space
Mrs. Koch herself was selected by NASA to be on astronaut in 2013 and is working on the ISS as part of the Expedition 59, 60 and upcoming Expedition 61 crews.
By the time she returns to Earth, she will break the record for the longest spaceflight by a
NASA's astronaut Nick Hague and cosmonaut Aleksey Ovchinin.
On Saturday, July 20, Mr Hague snapped up a photo of the approaching Soyuz spacecraft.  READ MORE: NASA's Juno spacecraft captures a stunning image of Jupiter
Today's launch, just 50 years after the Apollo Moon landing, mark space exploration as a transcending time, crossing borders, and containing inspire gains leaps. Sanding by docking to station … # Apollo50th "
The International Space Station is a joint international effort with more than 230 astronauts representing 18 countries visiting over the years.
The space station has been occupied since November 2000 – two
NASA said, "Highlights of upcoming investigations the crew will facilitate the orbiting laboratory in the unique microgravity environment include the growth of moss aboard the station, a platform to attempt successful printing of biological tissues and bio-mining in space. "
Quick Facts about the International Space Station:
1. In a single day, the ISS covers a distance equals to the distance from Earth to the Moon.
2. As the ISS flies over the planet, it covers more than 90 percent of the world's population.
3. A spacecraft launched from Earth at the ISS in just six hours.
4. There are approximately 350,000 sensors on the ISS monitoring the astronauts' health.
5. The orbits of the Earth 16 times every single day.