NASA currently has 39 different active missions. Some are decades old, like the Voyager I mission that launched September 5th, 1977 and is now in interstellar space (made famous, or more famous, by "Star Trek: The Motion Picture").
1-Determine whether Psyche is a core, or if it is unmelted material.
2-Determine the relative ages of regions of Psyche's surface.
3-Determine whether small metal bodies incorporate the same light elements as in the Earth's high-pressure core.
5-Characterize Psyche's topography.
Crew and Cargo Transport Systems:
Orbital ATK & SpaceX are the only 2 private companies that have operational launch systems in place.
(NOTE: This series is several months old. Orbital ATK has had a couple of recent missions to the ISS as well.)
Bigelow Aerospace has developed inflatable space station modules, with unmanned prototypes currently in low earth orbit (LEO). Longer term aspirations include larger stations used for supply warehousing & personnel modules for space habitat and scientific testing.
Two companies have been testing space vehicles: Armadillo Aerospace and Moon Express.
Two companies dominate the space mining category-Planetary Resources, Inc. and Deep Space Industries.
There are three (3) main asteroid types; C-type or carbonaceous asteroids, S-type or silicaceous asteroids, and M-type or metallic asteroids.
Pictured is an asteroid named "Lutetia". Photo taken by ESA's Rosetta spacecraft on July 10, 2010.
The previously mentioned Deep Space Industries is also developing orbital fuel stations, called “Propellant Depots” which will carry stores of various chemicals, delivered by space tankers, and can be accessed...
Now here is a category that will give you visions of Space 1999, Outland, and The Time Machine.
This image hopefully never comes to fruition, unlike most of the others presented here.
There are many, many rocket component and launch system companies. In fact, too many to list. Of the dozen or so some are diversified & the smaller ones tend to focus on only one tech in order to concentrate their capital outlays.
There were more active participants in this category in the past. Benson Space Company had begun the development of a tourist liner called the “Dream Chaser”, but the founder became ill and died in 2008. The company dissolved after his death.
President Trump just signed a bill funding NASA at $19.5 billion for fiscal year 2018, with a mandate to “to create a plan to send a crewed mission to Mars in the 2030s.”