Gonna start with spacesuits and maybe post some other stuff after.
Starting with the SK-1, worn by Yuri Gagarin during the first manned spaceflight.
The Navy Mk IV spacesuit was developed from earlier flight suits for use in Project Mercury.
The XMC-2 was an experimental suit used on early X-15 flights before being replaced by the MC-2
The Berkut spacesuit was a modified SK-1 suit with a life support backpack used to perform the first spacewalk during the Voskhod 2 mission.
The G2C spacesuit was used for early training and testing during Project Gemini, but never flew in space.
The G3C was used on the first manned Gemini mission, Gemini III.
The G4C was used on all subsequent Gemini flights (except Gemini VII) and facilitated extravehicular activities.
Gemini VII used the G5C spacesuit, modified to be taken off inside the small Gemini capsule during the 14-day flight.
Gemini IX-A used a G4C suit with Chromel-R "pants" to protect Eugene Cernan from the hot gases expelled from the Astronaut Maneuvering Unit. Difficulty during the EVA led to the AMU not being tested.
The AMU was intended to be worn on the astronaut's back and used hydrogen peroxide thrusters for maneuvering.
Buzz Aldrin on EVA during Gemini XII, the last flight of the Gemini program.
The Yastreb spacesuit was a further modified Berkut suit with a system of pulleys and cables to facilitate movement while pressurized. It was only used once in 1969, for the EVA crew exchange between Soyuz 4 and 5.
For Block I Apollo missions, the G3C Gemini spacesuit was modified to create the A1C. The crew of Apollo 1 were the only astronauts to wear the A1C suit. After the Apollo 1 fire, all manned Block I flights were cancelled and use of the A1C suit ended.
Following the Apollo 1 fire, the A1C suit was replaced with the A7L suit, designed for lunar EVAs (shown here without the Integrated Thermal Micrometeoroid Garment).
From Apollo 15 onwards, the A7L was replaced with the A7LB, which was designed for longer-duration EVAs and featured additional joints at the neck and waist to allow astronauts to sit in and drive the Lunar Roving Vehicle.
Beginning in 1973 (after the Soyuz 11 tragedy), Soyuz crews wore the Sokol-K spacesuit.
The Sokol-K was later modified to create the Sokol-KV2, which is still worn by Soyuz crews today.
Sokol spacesuits feature a front-entry design, with a large tube in the pressure layer that is tightly rolled and tied off to create an airtight seal.
Skylab crews wore modified A7LB suits with a simplified ITMG and visor assembly. Life support was provided via an umbilical with a backup oxygen supply worn on the astronaut's leg.
The crew of the Apollo-Soyuz Test Project wore further simplified A7LB suits, with unused gas connectors removed and a simplified cover layer. Since no EVA was planned, EVA helmets and gloves weren't carried onboard.
The Krechet-94 was designed for a manned Soviet moon landing. It was the first ever semi-rigid spacesuit, with an aluminum upper torso and a rear-entry hatch.
The Orlan EVA suit was designed concurrently with the Krechet-94. It was solely an EVA suit and as such lacks the waist and hip joints from the Krechet.
Crews of the first four Space Shuttle missions (which were fitted with ejection seats) wore Shuttle Ejection Escape Suits, designed to allow ejections up to Mach 2.7 and 80,000ft.
After STS-4 the Space Shuttle was declared operational. The ejection seats were removed and crews wore no pressure suits until after the Challenger disaster.
After the Challenger disaster, shuttle crews wore the partial-pressure Launch Entry Suit. It was a direct descendant of the suits worn by X-15 pilots and Gemini astronauts.
Limitations of the partial-pressure LES led NASA to shift to the full-pressure Advanced Crew Escape Suit in 1994. It was worn by all subsequent shuttle crews until the end of the program. A modified ACES will be used on future Orion flights.
The Extravehicular Mobility Unit was used to conduct EVAs from both the Shuttle and the ISS. It features a hard upper torso and soft limbs. It was first used to perform an EVA on STS-6.
STS-41B was the first untethered spacewalk. Bruce McCandless (wearing an EMU) used the Manned Maneuvering Unit to fly 320 ft. from the Space Shuttle.
On STS-41-C George Nelson made an unsuccessful attempt to capture the malfunctioning Solar Maximum Mission satellite during an untethered EVA. The satellite was later successfully captured with the Shuttle's robotic arm and repaired on subsequent EVAs.
The Strizh was designed for use on the Soviet Buran shuttle. Strizh allowed for ejection at speeds up to Mach 3 and altitudes up to 30 km. While Buran only made one unmanned spaceflight, it carried dummies wearing Strizh spacesuits.
The Chinese Shenzhou IVA suit is heavily influenced by the Sokol-KV2 but is believed to be Chinese-made.
China's first spacewalk used the Feitian EVA suit, which is based on the Russian Orlan.
Chinese Taikonauts after the Shenzhou 10 mission.
And now that we've covered all the spacesuits worn by astronauts so far, it's time for some fun.
This is Cameron Smith, anthropology professor at Portland State university and founder of Pacific Spaceflight. PacSpace has the goal of building a lightweight, low-cost pressure suit.
The first pressure suit built by Dr. Smith (The Mark I "Tsiolkovski") used a diving drysuit as a pressure bladder and a Soviet high-altitude flight suit helmet.
The Mark I suit featured a pressure restraint garment made from a modified flight coverall.
The pressure restraint garment gives the suit structure and prevents it from "ballooning" when pressurized.
An orange flight coverall is worn over the pressure restraint layer for visibility and protection.
The Mark II "Gagarin" suit is a modified Mark I, featuring new constant-volume elbow joints for increased mobility.
Mk. II flotation testing
The Mark III "Plasma" suit replaced the bulky elbow joints of the Mk. II with a new, slimmer design.
Testing the Mk. III suit in a mockup "capsule."
The latest suit is the Mark IV "Zaphod." It features all soft joints and an integrated faceplate instead of a helmet (similar to the Gemini G5C suit).
The Mk. IV suit also has a front-entry design like the Sokol.
Performing a "beat test" of pressurized seams.
Dr. Smith's sketches of his pressure suit designs.
Showing of the suits at TEDx Portland.
And to wrap up the spacesuit posts, here's Elon Musk in a mockup SpaceX-designed spacesuit.
I lied, a few of Manned Orbiting Laboratory suit pictures to finish up.
These suits never flew, but were intended for use on the military MOL space station.
The MOL spacesuit gloves had sharkskin pads on the fingertips for grip, and metal "fingernails" to pick up and manipulate small objects.
That thing almost killed its wearer. It inflated to near-total rigidity (and a lot of sweat from what I remember) during the space walk and wouldn't fit back into the inflatable airlock. He ultimately had to depressurize the suit and basically give himself a case of the Bends to get back in the capsule.
I forgot some good Navy Mk IV pictures
Blue Origin just launched a capsule into suborbital space and the recovered the booster.
lateral thinking would prefer both if ascending in to any void
There are a few good books to check out:
This one has some great pictures as well as a lot of good historical context and design details.
This one is specifically about the Apollo spacesuits:
US Spacesuits has tons of great technical details and diagrams:
And its counterpart, Russian Spacesuits, is equally informative:
Continuing from here
And of course we couldn't talk about Cygnus without the CRS Orb-3 failure
And now some of the upgraded Cygnus for the return to flight, currently scheduled for December 3rd, 2015 aboard an Atlas V.
Atlas V core erected ahead of launch.
Centaur upper stage mated to the Atlas V core stage.
Encapsulated Cygnus mated atop the Atlas V
Full vehicle stacked and awaiting launch on the 3rd.
Some photos of Atlas V rolling out to the pad earlier today.
Good launch today. Cygnus is on its way to the ISS.
Enhanced Cygnus spacecraft approaching the ISS
...all that's missing is a Pepsi logo
(The Cygnus spacecraft is an American automated cargo spacecraft) ..
jesus... all that's missing is the mistletoe
whatever's next to conjoin with the iss...? a frigging mosque!
That would be BEAM, the Bigelow Expandable Activity Module, scheduled to launch to the ISS about SpaceX's CRS-8 resupply mission in February 2016.